for shows....tix for tonite. gotta get there early to get a ticket...then go to the venue and redeem your seats. done. usually far less than at door price. example: a cirque show could be say 100 bucks....at tix, maybe 70 for same seat. they also have buffets for less and for other restaurants.
if you stay off strip, youll have to find your way to and from the strip. downtown is usually cheaper...and its older. more of the town's weirdos are there. plus side is drinks, food, and gambling is usually cheaper. otherwise, you can visit some of the other hotels and walk around. some have nothing more than a casino and food court of sorts....others have that plus fancier shops and lavish decor. some even have small, free shows that run every so often. caesers palace, bellagio, the venetian among others are very pretty to walk thru. for free of course. the rio, slightly off strip has a good buffet as does the cosmopolitan. the mgm had a lion exhibit...not sure if its still there. not much to see in luxor, new york new york, excalibur. mandalay bay has a shark exhibit....for a fee. to do something different.....you can try minus 5. its a bar where everything is made of ice...and its minus 5 degrees. they loan you a coat. dont remember the price.
any locals here can suggest things to do off strip....which may end up cheaper as theyre usually targeting locals rather than tourist.