Lots of times I get these postcards in the mail saying that I won a free cruise in a drawing. I never call them back.
I have earned free cruises by going to Timeshare talks. But, you have to be pretty insistent to get away with being there only 45 minutes. Once we went on our free cruise and spoke to a person next to me who went to the same Timeshare talk that I went to. She said that she & her husband were there for 6, yes, I mean 6 hours. She saw us leave after 45 minutes and recognized me on the ship. I was pretty impressed that she even remembered me. Neither of us bought a timeshare. We don't go to these things anymore now.