I read that thread yesterday and it was really helpful ! But it does seem like you get a different answer depending on who you get on the phone. I can call today, do you think it's too early ? The birthday is January 3rd. I do have the ADR though.
Fast Pass.. My mom is a Grumpy maniac ! She has everything,from the beach towel to the hat, including snowglobes, T-Shirts, and her favorite a 36inch stuffed Grumpy

I think the other thing she'd like is the Mickey/Minnie shaped cake, but it's so big.. there's only 2 of us. Even the small cake I planned to share with the other tables there's no way we'll eat it all especially since it's at breakfast with all the other stuff available.
To be honest I'm not really a cake person,but we're from France and it's IMPOSSIBLE to find American-style cakes here, with the writing etc.. every time we watch a US movie or series and they have that sort of cake, she always says "Oh I wish we would get one of those someday"..
Also she is a teacher, and usually January 3rd is when Christmas vacation ends. First time in 30 years that she's on vacation for her birthday, and it will be our first time at Disney too so I really want to go all out.
Fancy cake, balloons, and get something delivered from Mickey Florist the night before
Someone on the other thread said it's possible to special order the cake from Main Street Bakery or the GF Bakery and have it delivered to a restaurant. Hope this is still possible... Our ADRs are for 7.50am there's no way I'll have time to go to DTD and pick up a cake that morning.