Yep I just did it last week during my stay at the Mirage. I used a free vpn called Hotspot Shield on my laptop. I also used an android app called Location Changer. It worked for both, I could not see comp rooms before using them and after I was able to see and buy comp rooms in vegas.
I use a free vpn called Hotspot Shield when I'm in vegas that works on my computer. There's also an app you can download on your phone called "Location Changer" that works as well. The myvegas app just needs to think you're somewhere else
I used a google chrome extention called "APK Downloader for Google Play Store", then went to
https://play.google.com/store/apps/details?id=com.playstudios.myvegas.bingo
and you can download it.