I just had my first experience booking PS...yep, Mary Jo is right! They still call them that. I was really surprised when the CM didn't give me any confirmation numbers, so I asked and she said they would just be under my name...and jokingly said, "we aren't as big as Florida". The entire process went very smoothly when I made the PS...got all I wanted at the times I wanted. When I first called DL Dining I thought I'd only be able to make a PS for exactly 60 days out and would have to call back daily, but the CM I talked with was able to check each location and it turned out that I was able to book all my PS in one call...little pixie dust may have floated my way. The only place I wasn't able to make PS and the Gospel Brunch at House of Blues. If memory serves me correctly, I think the CM said you can't make PS for RFC through DL Dining either.
I didn't want to risk not having PS for the few TS restaurants we are trying on our first trip, but do plan to wing it a couple of meals for TS and will do CS for the rest.
Hope you have a great trip! I'm starting to get really excited about ours now that it's getting closer.