Get a player's card everywhere. They are free and essential for earning comps (free perks like meals and show tickets). Always use your player’s card when playing anything, this is how you accumulate points. Check your email for promotions and special offers
Don’t book a hotel room without a player’s card. Even the lowest-tier cards can get you cheap or even (almost) free rooms. Weekday rates are way cheaper than weekends, so try to play your stay around the hotel rates.
Casinos in Las Vegas offer free drinks while you are gambling, so take advantage while you’re at the tables or slots. You can definitely lose money just trying to get a free drink, but you can’t win money buying a beer from the bar.
Some of the best food and cheapest food is Off-Strip. I’ll be honest I normally Google “food near me” and it has never led me astray.
Ubers and Lyfts add up fast and can destroy your budget. The bus is much cheaper but not as convenient or stylish, but these are budget tips so get over yourself or I don't know tell yourself it's better for the environment. The “Deuce on The Strip” route runs from The Fremont Street Experience all the way down to South Point Casino. It comes every 15 minutes or so, and it’s a fraction of the cost of rideshares.
My go-to budget casino is South Point. It is clean, has great dealers, and low minimum bets. They’re also pretty generous with comps, all you have to do is ask the cage or the pit boss. After playing a few hours of min-bet blackjack, I’ve gotten free meals every time I have asked. If you’re hungry late, hit up the Graveyard Special at Coronado Cafe for $5 for steak and eggs from midnight to 6am, and it’s solid.