Will be at WDW. When do I need to purchase the tickets?

[manolomm]

We will be arriving disney world on aug 5th and its the 21st of july. When do I need to purchase the tickets for 2 adults and 1 kid for park hopping. We're staying at one of the disney resports. Can I just purchase the tickets when we get there? or we need to purchase it now?

[Donald is #1]

I believe that you can do either.

[helenk]

If you buy them in advance you can save a few dollars. Generally I buy my tickets as soon as I know my dates. I order them on line from ticketmania.com, as they are generally cheaper than buying them from Disney. But I think that it is too close to your trip to order them from ticketmania without having to pay extra for the mailing to have them arrive on time.
You can order them on line from disney and they will hold them at "will call" for you, and the price is cheaper than buying them when you arrive.