We almost always use DAS for the meet and greets with FP. We never know whether it will be a character trip or not for him so booking the FP for it is a gamble. Some trips he wants to meet every character and check them off. Other trips he doesn't even want to see them from afar, let alone actually MEET them. You never know how many random characters are still around the parks until you have a trip with a kid who freaks out every time he sees one.