Been to Vegas a bunch of times and never did the Strat tour. It is definitely worth it (with a coupon of course). Awesome views from an amazing structure. You can see for miles and miles in every direction. We were up there as the sun was going down and it was terrific.
You can also hang out and watch the rides. Great place to people watch and chill. Only warning would be the general area. The parking deck is seedy as all get out.