It will depend on how soon you need the tickets. If you need them in the next couple of weeks, I would wait and pick them up when you arrive at the parks. Make sure to ask them whether they will be at your resort at Check in or at Will Call at the WDW parks or Guest Relations at Downtown Disney, so you aren't running around that 1st day looking for your tickets. If you are ordering them more than 2 to 3 weeks ahead of time, then you should have no problems having them sent. If they are Will Call tickets and you don't receive them after asking for them to be mailed DON'T PANIC, you may go to Guest Relations or Will Call and they can look them up with picture ID and print them for you. The person who orders the tickets MUST be the person who picks them up in any case, and they MUST have a picture ID. I am not sure how that would be handled if you have to pick them up on check in to your resort, but take the number and contact name of the person at the Ticket broker with whom you dealt just in case.