I called today to make a group dining PS for LTT for one of the MVMCP nights. The CM said sorry, no availability. I asked if it was fully booked, or if there just wasn't room at any time for a party of 16 - she said it was fully booked. 5 minutes later I called DVC to make some adjustments to my ressies, and asked about them making a PS - she looked up LTT and immediately gave me 6 times from which to choose! I've read that this happens - goes to show that if you don't like the first answer you get, try again!