To go thru Harrah's cards at a swap meet is way too time consuming and there's 53 varieties to go thru (probably 55-57 by August) and you just can't concentrate. Not only that, people think you're antisocial and that you're "looney" for having such a fascination for cards that all look alike. There are other prettier slot cards and keys and gift cards to deal with and people to talk to and food to eat and drinks to drink and raffles and auctions and business meetings - did I leave anything out??? Harrah's cards you have to do at home so you can talk to yourself and maybe swear a little (or a lot).