Hiya, Lori! Welcome to
planDisney, and thank you very much for your question.
It sounds like you're at the very beginning of planning your
Walt Disney World vacation for next fall, and that's so exciting. It'll be a lot getting your vacation all put together, but we are going to be here whenever you need us to get you to your practically perfect trip.
You do not need to purchase all of your Walt Disney World
theme park tickets on the same day. Whew - that's good news! You'll be able to space out purchasing those tickets as your budget allows. As you buy them, you'll be asked to choose the first date that you intend to use them, so you'll just enter the same date for each ticket.
You will need to have
theme park reservations for each of your tickets. I usually recommend that you book your reservations as soon as you can after you buy your tickets, but in your case, I might suggest that you wait until every ticket is purchased. That way, you'll be able to check availability and book the same theme park for everyone in your party.
I hope this information makes planning a little easier, Lori!
Anna