https://www.amazon.com/gp/product/B00IFHFJXI/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
I bought these and just use a 5 gallon bucket with water ive heated up on a grill, its game changing being able to shower in camp
I have AC too but we're in CO and there are basically no electric sites here. But it's low humidity and cool at night so it's mostly unused.
I haven't tried the hose extension because we haven't had tent room.
This is our porta potty tent. Works fine but can be finicky to collapse to put away
WolfWise Pop-up Shower Tent Green https://www.amazon.com/dp/B01AT3T0GC?ref=ppx_pop_mob_ap_share
Our porta potty;
Camco 41545 5.3 gallon Travel Toilet https://www.amazon.com/dp/B018LBYCT4?ref=ppx_pop_mob_ap_share
We always use RV toilet paper so it dissolves and makes dumping the potty easier.
Thetford 03300 Aqua-Soft Toilet... https://www.amazon.com/dp/B000TV59EC?ref=ppx_pop_mob_ap_share