My sister is heading to MK in just about a week. She is hoping to get in the park as close to 8am as possible, but she has to resolve a couple of ticket issues at Guest Services first. Would you deal with that at the ticketing window at the TTC and then head over to MK, or would you go ahead over to MK and then go to the Guest Services booth just outside the park? (If it impacts your answer, she's got 3 issues - an ancient ticket that can't be linked to MDE, a child ticket that needs to be converted to an adult ticket because the ticket holder is now a Disney adult, and she's got tickets on MDE for some members of her party and needs to get plastic tickets for them to use for FPs). Trying to make this as efficient and painless for her as possible. Thanks!