Some couples feel uncomfortable revealing their sexuality in public. A camping trip is a wonderful vacation for everyone. Nobody questions two guys or two gals camping together. If anonymity is what you seek - this is the perfect way for you to spend some time alone together. Older children might feel uncomfortable with your sexual choice and this type of vacation will give you a chance to travel with embarrassed children.
Many national forests allow camping in recreation areas - outside of regular campgrounds.
This is a great camping vacation for parents or single couples. Children need to see physical affection between their parents and you can hold hands and kiss in these areas without fear of public reprisal. Don't allow homophobia to keep you away from the camp grounds.