Welcome to the forum. I can't help with your shower issue, but this forum is a wealth of information. Very likely someone has encountered something similar.
BTW, lots of us began with tents etc. Feel free to ask if you have questions.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.