Let me say I don't know a bunch about the DVA so I'm making a comparison on what I've read.
I don't see any real advantage to opening a dva except maybe getting 80 dollars worth of gc's if I spent 4K on a trip.
I generally abhor putting my money anywhere where it is not working for me. whether it's 20 dollars or 20,000 bucks, my money has to work as hard as I do.
I like flexibility. I have had times where we've planned
Disney vacations only to end up some where else.
Without a firm date, I would get a savings account. My credit union has 12 month cds at 1.3% interest, then in a year if they still offer the gc perk you could simply open up an account then.
But the dva seems nice because I think mentally I would like having this little fund specifically designated for Disney. LOL sort of a mental guarantee that I'll be back.