Called yesterday to check on tickets for a trip in 2024. I inquired about the ability to use a date based ticket on a later date if unable to use on the original date reserved. I added that I understood that if a rate increase happened I would be responsible for the difference. A warning to those buying tickets in advance, I was told that tickets are completely NON-refundable and NON-changeable. Disney allows you to use the funds paid for an unused original ticket to be put towards a future ticket, not so Universal. I will now not be buying tickets in advance and as a result, depending on how things go during our trip, we may not even go to USH. If they had allowed me to purchase now and be flexible with funds, they would have had my money.