The indoor shower can be found in the bath house at the campground...  ;-)
We just upgraded to a larger (from 18ft to a 20.5ft) travel trailer last
spring.  The old one had a bathroom that was a joke in size.  The new one
has one with a smallish tub sort of thing.  I've only used it once, and that
was at a campground with pretty yucky bathrooms.  It was only moderately
worth it...the trailer shower is just too small.  Of course I'm also 6'
tall...

If I was in the market to actually buy something brand new (or something
newer than late 80's to early 90's), I'd be looking hard at a hybrid.  We
camp a lot without hookups, and sometimes at the beach, so lots of airflow
is a must.  The newer trailers have no windows to speak of...it's just
crazy.  We looked in a 24' Fleetwood (can't remember the brand) hybrid
probably 2 years ago at the local dealership.  We both absolutely loved
it...it had a bunk out the front and one out each side at the rear, plus a
small slideout where the sofa was on the side.  It was enormous inside, and
weight was only like 3900#.  Plus the bunks had big screen openings to let
air through.  But...I'm not sure we could ever use it enough to justify the
20-25k price tag on it!!

As for the kids and friends...just do what my parents did when my brother &
I got old enough...we slept in tents.  It was great having your own space.
Of course we always camped at places with decent sized campsites where you
had some elbow room...  But, I see you're in FL, so I guess it could get a
bit too hot for that...

Wesley

Hybrids offer the greater sleeping room over a traditional trailer but
all the other amenities.  I have really enjoyed ours.  The setup time is
about 1/2 that of a popup, maybe much less.  Much of the setup time in
our popup was from unpacking all the gear we stored on the floor.  In
the hybrid everything is stored in cabinets making setup time quick and
easy.

We picked the Starcraft Travelstar 21SSO.  It's also available in a
white interior as the Antigua 215SSO.  Its about 22' closed and has a
super slide out (Sofa and dinette) making the floorspace quite roomy.

Like a popup it has 2 queen sized beds.  The sofa folds out to a bed but
I feel its only adequate for a child.

The bathroom is small but more than enough room for the toilet, shower
and a sink.

This size trailer is easily pulled by a 1/2 ton truck with a decent V8.
 I have pulled mine with a Dodge 1/2 ton 5.9L and a Hemi Durango.  Both
pull it with ease.

I had a Jayco Kiwi...loved it...especially when I was doing a solo road trip
(I do a lot of fishing)...in a one night location I would not even unhook or
set up, just sleep on the sofa bed and I had plenty of room.  Early
retirement forced me to consider a few things....

I don't even notice the pop-up that I have now, when I am towing (wish I had
a smaller engine - I bought the van specifically to tow the hybrid).  But,
with the hybrid, my mileage was cut in half at best....add in the insurance
and storage fees...it does require a little more maintenance....

I liked the Jayco but found some of the finish parts....curtains, fold out
step, cabinet drawers to be on the cheap side and I was always have to
re-secure screws and the sewing on curtains and such....good structure,
corners were cut on final assembly.

john