Used our free nights (west tower one bedroom suite with a fountain view) and we probably gambled the last day and a half total (with 200/day gambling budget, we definitely didn't spend much, but played a while).
Which I used in October and took my husband - his first time in vegas (he had a blast).
However I signed up for Cosmo players card in September, took a trip with my mom (southwest vacations - great deal) and stayed 4 nights and when I returned, already had 4 free nights comped waiting in my email(and that included resort fees also, so it was totally free).