Does anyone run an air conditioner? If so, how annoyed do your neighbors get at the sound? I don't mind sleeping in the cold, but hot humid weather is just miserable.
I agree on the humid weather thing - I can not under any circumstances sleep when I'm miserably hot, sweaty, and slimy sweaty.
AC in a small space on generator is doable, but you want a GOOD inverter generator that won't keep all your neighbours up, and be sure to park in an area with other larger RV's/motorhomes that are likely to be running generators at night anyways...and even if not are less likely to be bothered by yours because it's quiet.
The Honda EU2000i is a stellar generator that will easily start and run a small 5000 BTU window-unit style AC that you can get at Wallymart for $150 in the summer, and they are amazingly quiet. What I used to do with mine was put it at the bed of my truck - keeping it up in the air a little with the bed surrounding it helps direct the noise up and away vs sitting in on the ground and having the sound go in all directions. If I was looking for quieter yet sometimes I'd drape my tonneau cover about half way over the bed and put the generator at the edge with the exhaust facing forward under the tonneau. It never overheated (since it was drawing it's cooling air from the open area) but blowing the exhaust forward and under the tonneau muffled things even more. Under light to moderate load I couldn't even hear it from the next campsite usually.
Yes, in the end, between an EU2000i (they fetch about $1000 even used) and the AC you'll be in for some coin without doubt, but it's worth it (for me at least) to be comfortable and get a good nights sleep.
Run time may be an issue especially if the AC runs quite a bit (compressor on vs just fan) through the night so be sure to pre-cool the space as much as possible and then fill the genny to the brim again just before retiring for the night. A lot of people using EU2000i's for long periods plumb in external fuel sources, but that's a different ball of wax.