I bought a ticket to support the shul, I didn't buy by the other Raffles. There are many people who bought for that reason. Had I win, I would have love to go with my wife, but I don't think I would end up going and I would try to sell it.
Most people have jobs and kids and they are not the type to spend 20k for a cruise and not even 13k.
So if they have an offer to exchange it for cash they would do it.
If the shul had a choice between a cash raffle and the cruise, most mispallim would have chosen cash.
However, it was a smart move from the shul to get outside people donating for the shul.