We cannot tell you exactly what the deal is — it’s just too good. What we can tell you is this: If you work the service/hospitality industry grind, you owe it to yourself to stop by St. Pete’s number-one spot for killer Mex-fusion, tequila and casual fun on Sundays between 5 and 10 p.m. to take advantage of the bar-slash-restaurant’s appreciation of your efforts. You’ve earned it. You deserve it. And Cantina knows it; that’s why they’ve got quite possibly the best deal, and definitely the best quality for the money, in the industry-night game.