1. Never eat the same buffet twice. The first time the food is mediocre, but variety and novelty suffice. The second time, it's just mediocre.

2. Play slot machines on a whim. On the way back from dinner, there was a "Monty Python and the Search for the Holy Grail". I wasn't in a hurry, had nothing in particular to do - so I plunked in a 20, and hit "max bet" - immediately tripling my money. After a few more unsuccessful spins, I got a "Black Knight Bonus" and tripled my money again, ultimately walking away with a considerable lump of filthy lucre. Yay, Monty Python!