What did you decide to do? IMHO, this sounds like a trip Dad should take by himself. He needs to see his dying grandmother. Your nighttime concerns for DS1 are valid - being in someone else's house overnight where there might be lack of support for his parenting style - ugh. DS1 might very well surprise you both with how well he does with his Dad overnight, but this doesn't sound like the trip to experiment.
6/30/10 at 4:05pm