First Time

definitely leave something in your site to show it is not available. some people use orange cones, others leave a sign or an old lawn chair.

Talk to other campers, most of us will assist and answer any questions. OR, explain any issues you need explained.

Night noise and bright night-lights are something that often annoys other campers.

That will be a nice trip! Plan on leaving very early in the morning to get off the island. The Cross Bronx gets awful after 6 am! The BQE is hair raising for any rv. Once you hit Jersey it will be a lot better. Make sure you reserve your spot(s) as far in advance as you can. Ask the campground if you need to leave something in your site while you are gone as some will see an empty spot as available. As mentioned above, common sense tends to prevail when figuring what should and shouldn't be done in a campground. Just imagine the way you would expect those around you to act and you will be ok. Have a great trip!

That sounds like a wonderful vacation!

Etiquette is far less complicated than it sometimes appears here. Basically, if you act respectfully towards the other campers, you'll be doing very well...which means such things as avoiding loud noises during quiet hours, not walking through other occupied sites, driving at reasonable (slow) speeds through the campground, and those sorts of common-sense things.

There's nothing wrong at all with taking the motorhome to leave and drive around for awhile. Setting up and tearing down camp can be a bit of a hassle, lessened by not setting up more than you need. (It's things like clearing off the counters and stowing junk properly that I find the most annoying in these sorts of situations; if you try to keep unnecessary odds and ends to a minimum, and put things away when you're done using them, it'll help.)

I recommend putting together some sort of a checklist for breaking camp to be sure you don't forget to do something. When you discover something that you forget to do, add it to the checklist for the next times.

Just do not rent anything over 24' and you'll be fine.

Yes, some people use their RV as their only mode of transportation, especially for smaller Class C or B RV's and rarely Class A's. I wouldn't worry about it.