Big bathrooms are a hotel bonus. You can either take a shower or a bath together. Better yet, line the tub with pillows to create a makeshift bed if you don't want to get wet. "Time is of the essence for parents, especially on vacation," says Kristen Chase, author of The Mominatrix's Guide to Sex: A No-Surrender Advice Book for Naughty Moms. "Why not double up in the bath or the shower and knock out two birds with one stone?" Bring along the discreet "I Rub My Duckie" travel-size vibrator and your kids will really think it's bath time for you and Daddy.