Hey DMI, Where do you live?. I have suggested this before to some friends and it works for them (and myself). Since you have "experience" waiting tables try to get in a large resort/hotel as an On-Call Server in Banquets. Since you know your days off ahead of time you can pick up shifts those days, and/or submit it to their scheduling. You only work when you want to (and if they need you), but depending where you live it can be anywhere from 15 to 40 dls an hour. It's easy, mindless, and still gives you time to do other things while making a little extra money (I'm getting my MBA online). One more thing, since it is On-Call you can be hired at multiple sites. I'm a Bartender/Server at 2 different high end resorts here in MCO. Believe me, it works.
One drawback though, you won't get cash tips at the end of the shift. Since it is all Banquets (pre-paid contract) your gratuity gets paid in your pay check every 2 weeks. Good luck!.