L.T.
I'm pretty sure they have an age limit--seems to me I read about that one time when there was a hot-air balloon festival in our area and I think the age limit was at least 12 accompanied by an adult and maybe even older. Personally I would never take children that young on a hot-air balloon ride...what if they just got too scared? There's no easy/quick way to get down!
Save this kind of thing for a date night/day with your hubby/sig. other!