Vegas is the best. Ive been many places but i think Vegas is still my favorite. Im no pro, but have been there 7 years in a row, stayed a different place everytime, and we had our Wedding out there. Ive stayed on the old strip and new strip. Definately go see the light show at Freemont(old strip) and do your gambling there. Cheaper tables, and better payouts its seemed to me.
So far ive stayed at the Rio, Palms, Riviera, The Plaza, Circus Circus, Tropicana and for our wedding we had a suite at the new Planet Hollywood Westgate tower. That place was very nice for the price aside from having to walk through the shopping mall to get to the casino :/ . At least its pretty much a circle, but took the long way a few times drunk lol.
Your first time i reccomend that you just "keep moving". its easy to get caught up at some places so just keep on going and seeing things. Alot of the hotels have free shows or special things they do. The ship battle at T.I., lava show at Mirage, Fountains at Bellagio, Lion feeding at MGM, Floating parade at Rio, etc.
My favorite steakhouse was Nine at the Palms ( i like there clubs the best too, incredible views of the strip), Binions at the old stip is a classy old school joint tho. Were planning a trip back again next spring for my 30th birthday and our anniversary. Cant wait to book it this fall!!