We alternated between FLYING to Denver, renting a car and discovering the Rockies for two weeks and taking a 7 day cruise each year. Do yourself a favor and leave the camper at home. It's too hot around here.
7 day cruises are made for moms. She only packs once, doesn't have to worry about feeding and amusing the kid's. A cruise is Moms Vacation. My wife was not too excited about taking our first cruise but about half way through it she realized SHE was truly on vacation for the first time. We have done nine more since then, the last two without the kids.