Yeah if you plan on making that a regular thing, get an MLife card and play with that while you're there, it will build up credits for free rooms, faster than the apps. MLife is the umbrella over MGM, Luxor, Excalibur, and a lot of others.
You guys have legal gambling in Florida? Since we have it here, my woman gambles in the casinos here under that and gets a crazy amount of offers. Free suites here, and constantly getting free rooms in Vegas for all of those hotels. I was surprised that when we went to the Battle for Atlantis tourney, we got 3 nights free there because they were tied in somehow.
As far as the strip hotels go NY, NY I wouldn't stay at again until they do a refresh on the rooms, even then it's not that great. Them and the MGM (even the regular suites) are pretty basic, but it depends on what people are using the room for. If you're talking nice suites, Aria, and Cosmo, Bellagio are a level above those imo. Aria and Cosmo are my favorites for rooms and good bars. Sometimes it just comes down to which is the newer build. You can go online and see everyone's suites. People's experiences there and what they like will be as diverse as asking about NYC. Just so much.
I'm not much of a gambler in the video poker or table games sense. I use Vegas for food, boxing, and sportsbooks. Westgate is the worlds largest , really fun for the NCAA tourney, besides that a bit overrated imo. I like Caesar's, old classic feel and cool stuff like on Derby day a proper Woodford reserve mint julep ran down an ice slide into a commemorative cup, etc. The little things for me, lol.