u/Unhappy-Ad-472

I currently have 4 nights booked at park MGM with the following room rates and it comes with freeplay/resort credit.

1. $18
2. $76
3. $90
4. $19

So no completely comp'd rooms. Will I be able to book a 2nd room at park MGM using the free night us MyVIP reward? Currently when trying to redeem the system is letting me but I am unsure if it will cause one of them to be cancelled.