I saw that only MGM is offering freeplay from Myvegas. I see that it is only redeemable if you are staying at the MGM for a minimum of 1,2,3 days, and the more days you stay, the more you can get. I am staying 3 days so I bought 50 in freeplay, but I also bought the 25 freeplay because that has a two day minimum stay. Can I use both? anyone know?