She won. Hotels it is.
When we had all the kids in the house, we did a camper once...saved some cash, and had a different experience with the kids, but not sure it would be worth it now, with just the two of us.
Not your situation, I don't believe, but for those with preteens at home, I would definitely recommend going camping with the family a few times. Can be a hassle if you aren't used to it, and you will likely have to improvise when you forget things, but it does make for some great memories for them that they will take into adulthood with their families.