How easy to add on days?

[eliza61nyc]

So a relative is joining us on out WDW vacation in September for 3 days. She maybe able to extend it but won't know until later, any problem with purchasing a 3 day pass from undercover tourist and then adding 2 days on. Can you still do that with the new park reservations system

 

[DisneyJoe]

So a relative is joining us on out WDW vacation in September for 3 days. She maybe able to extend it but won't know until later, any problem with purchasing a 3 day pass from undercover tourist and then adding 2 days on. Can you still do that with the new park res

You can always purchase tickets or add days to existing tickets (as long as they aren't fully used), but if you don't have a park reservation, you will be unable to enter a park.