The other posters are correct. I too have had too many calls with CM's who were clueless. Some are excellent, and some are clueless. The trouble is, until you get into the middle of the call, you don't really know. My last trip, I sat on the phone for over an hour with one who was 'correcting' my personal info. It made me mad to do that on my dime to begin with, that she took so long only added to it. I really wanted to hang up. Since then, we booked a bounceback, and had to go through all of it all over again anyways.
Sorry for the rant.
I mostly just wanted to add that 1.) if you do get the dining plan for the first part of your trip, you can use the credits until midnight of the day you check out of that resort - so you can use them for dinner that night. You just have to use the same room key.
2.) It probably isn't worth it financially to get two sets of tickets. The cost of day one of a ticket as opposed to adding on day four is HUGE - Like $85 vs. $5. If you do have any package component attached to the second room, then someone physically has to go to the reosrt to check-in before you'll get your keys/tickets/meal credits.