Door prize at wedding expo- scam?

I don't know if it's a scam or not, but I did win a $1400 credit at a luxury jewelry store at a bridal expo. No scam and no catch.

I used to work for a company that sold China, Crystal and cookware. We used cards filled out by brides at shows to call them and tell them they won a prize. Truth was everyone "won", but to claim their gifts they had to sit thru a 90 min presentation on our items for sale. If you get calls like this ask questions, lots of questions. If it smells fishy it probably is

I did!! We were told we won a free flight for our honeymoon plus one additional flight. But we would need to attend this mandatory lecture on time shares and give them a credit card for access to the lecture. Total BS. Don't fall for it!