Parks not accepting Amex CC

I think the point about Discover's cashback con is that Discover calculates their interest differently, so unless you're paying the account in full every month your finance charges end up being much higher than if you'd put the charge on a MC/VISA.

For example, I once accidentally ended up $1 short of my new balance (not $1 short of my minimum, $1 short of my TOTAL balance... wrote the check for the wrong amount I think) and the next month had a $20 finance charge. They'd assessed finance charges for the entire previous month's balance, not just the $1 I carried over.
Last time I underpaid, I assure you.

I carry the Players' Club card. Anything good enough for Telly Savalas and Moe is good enough for me.

Surprisingly, I found acceptance of the American Express card more prevalent in Europe than it is here. No one over there has even heard of Discover, though.