i wouldn't let my ds go he's only 7 months but if he was 6 or 7 yeah! i love my IL's they are more pro-AP than DH! let your girls go i bet they will have the time of their lives and they will ALWAYS remember *that* trip w/GM and GP! i do think you should send instructions on MEDS but let the food thing pretty much go...that's what GM's and GP's do (i doubt their eating habits will be ruined for life in one trip ykwim?) enjoy some time for you and DH!