Hey there Hoppereenos.
Superheroes have hit our silly lil game. There is LOTS going on. So you are wondering just how exactly it all breaks down when it comes to you visiting your Neighbors/Friends and what happens when they visit you. No worries, we are here to help as usual.
First off, the basics. Both YOU and YOUR neighbor need to be in full swing of the Superheroes Event for this to go correctly. That means the Headquarters built….
…and you can see when you go to the main Neighbor screen that their Carbon Rod amount is MORE than zero.
You also want to make sure you have initiated the questline to the point it tells you to go visit Neighbors. This should start the Actions for you. This is in New Hero Rises Part 2.
That means they are in the Superheroes Event and most likely to have buildings to Report Criminals and Criminals to Capture. If they are NOT in the Event fully, it will limit what YOU can tap on and also cause issues of Vandalism (more info below).
So I suggest taking a look at your MAIN Neighbor screen first to make sure both of you are on the same page when visiting until they all finish updating. Until then, you could be wasting your visits.
Now on to the basics of visiting your neighbors…
HOW MANY ACTIONS IN NEIGHBORS?
The breakdown for this event is as follows…
Criminals will show up all over the town, including the Boardwalk if there are not many roads. 
Buildings and locations that are not already tapped but can be tapped will show the Red Telephone.
HOW CAN I GET MORE RODS?
If you purchase the Superior Squad Membership for 90 donuts, you will get double the payout on CRIMINALS ONLY. So 90 actions at 3 per Criminal turn into 6 per Criminal.
WHAT IF MY CRIMINALS ARE PAYING ONLY $$$ & XP?
If you are only seeing a payout of $$$ & XP or nothing at all when you tap a Criminal, it means you have already used up your 90 actions for the day and have to wait until your 24hrs resets. Or have not updated to New Hero Rises Part 2. Once it resets, you will be able to go back in and start over. Same for questline.
Best thing to do while hopping in n out of Neighbors, is just pay attention how many Captures and Reports you have left as you Visit. If it is ZERO, then you are done with your Actions for the day. 
WHAT HAPPENS WHEN I TAP ON A BUILDING?
While you are visiting your Neighbors, you will see the Red Telephones on many buildings. Once tapped, the Radioactive Signal will show…
…and your Neighbor will be alerted that you have just Reported a Crime. (Alerted also with a LOUD siren if the Notifications and Volume is on. See more on this below. Lol.)
To add even MORE fun to the game, any animation the Building has that you tapped will come alive. This is a GREAT chance to get to see all those dormant ones in action again. So have fun tapping away and look for ones you may have not been able to see animation on in a while and bring them alive. Like the Guinea Pig Rescue or my fav… Bad Dream House.
WHAT ABOUT VANDALISM ON THE BUILDINGS?
This is where it is CRITICAL you make sure you Neighbor is updated.
If they are fully into the Event and collecting Carbon Rods, then you can tap on ANY building that has a Red Telephone on it and it will act just as a normal building tap. They will see the Spotlight on the Building in their town and can clear it for Carbon Rods. Vandalism will not happen.
If your Neighbor is NOT fully updated and NOT collection Carbon Rods, the tap on the Red Telephone on the Vandalism Buildings will result in them actually being Vandalized and seeing the Broom and graffiti on their end.
So if you both are updated, Vandalism will NOT be an issue this Event. 🙂
WHAT HAPPENS IN MY TOWN WHEN BUILDINGS ARE TAPPED?
Like mentioned above, YOU will be alerted that your Neighbor has Reported Crime in your town.
If your notifications are on, you will here a VERY VERY VERY LOUD SIREN go off. So I suggest to disable SFX Volume in your game as well as on YOUR device to avoid this sound. Lol.
For myself, I will show where in my Galaxy S4 it shows the options for Sound manipulation. Your device will vary.
First in My Device Sound there is a spot to change each kind of sound individually. 
There is also a short link direct from just selecting the Volume option here. 
Then I also have the pop up that comes up on any screen as I use the side button to manually turn my Volume up or down and see the Cog Wheel for settings. I shut it ALL down.
If you do not wish to receive the Notifications at all in your game alerting you via pop up, those can be turned off too as shown above in “Push Notifications” as well as in the App Settings on your device.
All of these should help to eliminate that Siren too if you do not want it screaming out at you.
WHAT DO I GET FOR CLEARING THE RADIOACTIVE SIGNAL?
Now the tricky part, the faster you respond to the Reported Crime the more payout you get from it. Here is what we found in our testing.
Start Payout: 4 Carbon Rods
-4hrs: 3 Carbon Rods
-4hrs: 2 Carbon Rods
-4hrs: 1 Carbon Rod
So as you can see, you will get MORE Carbon Rods the quicker you clear those Radioactive Signals off your Buildings. Every 4hrs you wait to clear it, the amount you get will drop.
DO I HAVE TO LEAVE MONEY ON MY BUILDINGS FOR MY NEIGHBORS TO TAP? 
No. The two are completely separate. Collect away. During this event you can continue to collect money from any building in your town. Your Neighbor will be able to tap regardless if there is $$ or not. The ONLY thing that will not allow them to tap is the Radioactive Signal on a Building. So clear those as fast as you can to leave places for them to tap.
There you have the basics of Visiting Neighbors and clearing their taps in your town.
What do you think of this Event Neighbor Visits? Are you getting a lot of Carbon Rods? Have you heard the Sirens go off or have them go off at a bad time? Lol. Let us know.
~Bunny