My notes on dry camping:
TT was brand new and I put LED lighting in it. Each LED panel draws 1/7 the power of a 921 bulb.
I modded the battery tray and run 2-G29 batteries.
Added a second stand-alone IOTA converter (leftover from the previous trailer) to use in place of the factory WFCO. It charges the batteries faster off the generator.
Honda 2000i generator. Many of the campsites we use are shaded so solar doesn't work for us.
Surplus 30 gallon ($10) plastic drum in the bed of the pickup. Some fittings, old garden hose, a 12V marine pump are used to empty the gray tank and take it to the dump station.
We can easily go a week on the black tank. We dump on the way out or at home if the dump station is super crowded (like last weekend.)
I use a 15 gallon drum mounted in the pickup bed for fresh water. Fill at a cg spigot then gravity feed into the TT tank.
The TT had a mid-year change adding a flush slide. As a result it sits higher and there's a lot of ground clearance for rutted campsite driveways.
I could probably get at least 3 days off the batteries but I like to top them off for an hour a day on the generator if I can.
YMMV but it works for us.