Hi,
This might help...as I go there at least once a month with my travel trailer.
Bring:
Shower shoes like flip flops. The restroom is cleaned every day, but you never know. A wash cloth or body scrubbie, shampoo, body wash or soap, face wash, razor , shaving creme, towel for drying, deodarant, hair dryer in nec. and clothes to change into after you shower and are clean. A tooth brush and tooth past if your accomodations don't have a sink. And, if you forget anything. don't worry most stuff is available to buy there in the campground. Except towels, unless you want to buy a beach towel. There are washers and dryers available there in the comfort stations as well.
P.S
The comfort stations are packed during the morning hours and somewhat a night. The queitest time to take a shower is during the early afternoon when most folks are still at the parks.
Hope this helps...
Mmketeer