Online 6 AM Eastern time
Phone 7 AM Eastern time
You might have to call because there have been plenty of glitches and hiccups in the system.
You will have to include credit card information for all TS reservations for the no show guarantee. Be aware of the cancellation deadline (mostly the night before the reservation). If you fail to cancel and no one shows up at the restaurant you will be charged $10 per person no show penalty. Some meals/events have a different cancellation deadline (e.g. Wishes Dessert party, CRT, dinner shows, etc)so check your email confirmations.
CRT and the 3 dinner shows (HoopDe Doo, Spirit of Aloha luau, Mickey's Backyard Barbecue) are fully pre-paid at the time you make the reservation, unless you link it to your dining plan, if you have one. Even with a dining plan you'll need to give your cc info for the no show penalty, which in the case of these 4 is the full prepaid amount.
Everyone needs to be included in all the reservations even infants, whether they will be eating or not, or need a seat at the table or not.