Off to Paris tonight, and was wondering if anyone can recommend a good lounge which one doesn't need an Amex or business class ticket for entry. Cash is king, right?

Hi. You can buy a day pass to the American Airlines' Admirals Lounge for $50. It's very nice -- good snacks, drinks, comfort. My favorite is British Airways Biz Class lounge -- including showers, massage, food, etc. I'm not sure you can buy a day pass. Good luck and have a fun time in Paris.

http://www.delta.com/content/www/en_US/traveling-with-us/airports-and-aircraft/delta-sky-club/one-day-pass/one-day-pass.htm