I'm in a demanding DO program (not DPT, but similar demands) and we have a few people in our class with families. One of them has a very non-supportive spouse which has been a huge detriment to her, but she's pulling through. I think if your spouse is supportive, you guys will find plenty of family time if time is managed well. It's easy to have no time for anything when you're single and have nowhere else to be.