Hi Dave, here's some bonus tips for your next trip:
Play 3:2 BJ and use perfect Basic Strategy. It's not that hard to find good games, though you might have to leave the Strip. You don't need to understand or employ card counting at all. You can keep the house advantage down to about 0.5% that way.
When playing craps, always take full odds, and rather than making place bets, if you want additional action, make Come bets and take full odds when those bets are moved to a number. If you do make place bets, DON'T bet the 4/5/9/10; the house advantage on those bets is too high. Buying numbers is also usually too -EV, though buying the 4/10 can be OK if the house takes the vig from your payoff, not your initial bet (rare).
Triple zero roulette is a farce. They took one of the worst table games in existence and...made it even worse. I think the actual house edge is 7.89% or something like that...I didn't bother to look it up. Horrible!
So if you want to have a good time on your next trip and not get pounded through the floor in the process:
1. Don't gamble on the Strip. At all. Just off the Strip are several casinos that will give you a much better bang for your buck: Gold Coast, Orleans, Palace Station, Palms if it ever reopens, etc.
2. Don't play for comps. They've all got it figured out--you're going to get back about 20% of your losses. Obviously, you're better off just reducing those losses. That said, you'll find that the casinos I mentioned above will reward your play much more than the Strip joints, where anyone who isn't betting black chips is considered to be pocket lint.
3. When playing craps, restrict yourself to ONLY the best bets on the table: Pass, Don't Pass, Come, Don't Come (all with full odds), place the 6 and 8. Period. Nothing else.
4. Find 3:2 BJ games, and remember that the fewer the number of decks, the better. Learn PERFECT Basic Strategy and NEVER deviate from it.
5. Treat slot machines like they're radioactive. Which they are.
Just a final note: "walking away while you're ahead" doesn't really have much meaning if you'll be back in an hour, a day, a week...in reality, it's all one long gambling session--until you die (which is the only way you can truly walk away ahead). What you need to do is set a gambling budget and stick to it. Gamble in short sessions and do other things in between. Keep track of your wins and losses.
Divide your time into X gambling sessions. Allocate X amount of money for each session. If you play the whole session without losing your session stake, put what you have in your pocket and make that money off limits for the rest of the trip. If you lose your session stake, walk away and don't play again until your next scheduled session. If you double your session stake, walk away and make that money off limits as above.
As you recognize, you need to exercise thought and discipline to not get slaughtered in Vegas. Especially now.