If you have a choice of settings, try to find one - a "better" motel
with what's often called an "executive king" would be a good choice -
that has a jacuzzi shower. These are often arranged so that the door
looks straight into the shower area. (Don't ask me why!)

Set up and secure your lights with straps to wall hooks or fixtures so
that they can't tip anywhere near the shower or water.

Plug the lights and controller into a GFI socket - or bring your own
GFI-protected plug strip.

Do the water-beading shots first. The model should apply a light coat of
baby oil, lotion or sunscreen. She may have to scrub it off, dry and
start again to get all the shots in.

Shampoo, used thickly, makes nice sticky suds.

Depending on the model, ten minutes in, and then a half hour out to
prep, dehumidify the air, and let her (I a.s/u/me "her") to dry off and
reapply goo, repeat as necessary.