Thanks for the input!
Baby will be baptized at the Christian camp where DH and I met, and are volunteers. To us it is our "home church." DH thinks we should have baby baptized at camp on a weekday afternoon (Tuesday, July 3) and whomever can come will come. I'm afraid family will be hurt if we plan baby's baptism for a day when it'll be almost impossible for them to attend. Some folks would be able to, but most everyone is 2+ hours away. (Though, some folks will already be in Maine due to the 4th, and baby's godmother will already be at camp that day, so it would work for her.) As DH said, though, there's no guarantee that they'd be able/willing to come on a weekend day, either, which would have to wait till fall, probably late September or October, working around other events at the camp.