Is there a maximum number of times I can amend the date/time of my tickets on Booking Portal? You can amend your tickets up to 3 times on Booking Portal. Related articles Is there a fee for changing the date/time of my tickets on Booking Portal? Can I change the date/time of my booking? What do I do if one of my family is ill at the last minute? Can I change my visit time or date after my original visit time or date via Booking Portal?