I kind of look at it from a different perspective here. The guest didn’t even use his own money to place the bet. He sent an empty card with a degenerate 4 team parlay that luckily won lol. If you really wanted to be a good friend he would’ve placed the bet for him with his own money for $100. A $100 gift is pretty standard of a wedding gift correct me if I’m wrong equally to a 1,400 wedding gift payout just my take lol.