Did you already order the tickets?
If not let me explain and this might help.
When they mail the tickets, they are heat-sealed in plastic so that each ticket is in its own little pocket, like an old-school photo album but sealed so you can't just slide it out and put it back. You have to cut the pouch to get it out.
It states very clearly in all of their packaging that once you take them out of their seal, they cannot be returned. Also, even if you keep them in the sealed plastic but still link them to your DME account, they are no longer returnable.
So if you'd like to buy but want the assurance that you can still return them in the future, just be sure to keep them in their clear plastic pouches and refrain from linking to your account.
I last bought tickets from them in Nov and IIRC these were their stipulations. They may have changed since then so be sure to read everything!
ETA: I'm sorry, I just re-read your post. It's the SW tickets you'd like to possible return if plans change. I think that's a great idea. I've never bought SW tickets from UCT but I imagine they come heat-sealed too. I would email to ask before buying just to be on the safe side. Then you also have it in writing.
