Hello Shilpa!
Welcome to planDisney! Shilpa, are you excited? You are just days away from a magical time at Walt Disney World Resort and I'm sure you are going through all your final details. I have a trip coming up as well and I can't find any of my shorts. I heard it's nice and sunny in Florida and I'm a woefully unprepared northerner.
Walt Disney World Resort currently has quite a few
ticket offers but none are partial or "after 4 pm" theme park tickets. If you are visiting Walt Disney World Resort for a conference there are sometimes special offers for those attending that could provide the ticket you are looking for. However, information about such a ticket would have been provided to guests during the registration process. Speak to the conference event coordinators if you have any concerns. If you are not a conference attendee but still wish to visit any of the theme parks then you will have to purchase a standard theme park ticket. I don't know how much time you have available to visit the Parks, but many people do not spend a full day in the Parks.
Magic Kingdom Park, for example, has so many attractions, shows, and areas to explore that it is not possible to fully enjoy in one day. Many, including myself, spend about 3/4 or less of a day exploring and snacking before heading back to my Resort room to rest.
Make sure to take time to enjoy
Happily Ever After which is the amazing nighttime spectacular at Magic Kingdom Park. Each Park except Magic Kingdom Park has a nighttime spectacular and should not be missed. I especially love
Fantasmic! at Disney's Hollywood Studios as the show is enjoyed while seated and there are so many characters!
I hope this helps!
Happy Planning!
-Nimmy