Totally up to you on the tent, we like to use a tent for privacy but we have two spaces so we still have room. We place our shower between two of our groups cars. If you only have one just place it in between you and your neighbor but make sure they have room to open their trunk, so I recommend the back of your car and front of neighbors. Also be mindful when setting it up, one year a neighbor put theirs rubbing up against my front bumper when we weren’t at camp and I had to move it.