CYber:
I can recommend TWO chapels for you, since we got married in LV in 1997 and just renewed our vows last month.
For our first wedding, I wanted something nice - not "Vegas-y", and we chose the Little Church of the West. The service was nice (but, then again, we DID write it), the people were great, and chapel itself is so cute. It's also right next to the "Welcome to Fabulous Las Vegas" sign at the southernost end of the Strip. I won't talk about what it cost, since that was nive years ago and I'm sure that prices have changed.
For the renewal last month, which was on our 9th anniversary, we rented a limo and did the Drive-Thru wedding at the Little White Chapel. It was so fun, very sweet, and was only 30 or 40 dollars, plus another $40 we paid for the minister. Our limo driver took dozens of pics at their location, where there are flowers, benches, archways, etc. that made for nice photos. Plus, they have an Elvis-themed pink Cadillac that you're free to pose with, too, if you want.
As for dinner, we had it at Hugo's Cellar, downtown. It. too, was great: from the food to the service to the atmosphere.