MyVegas combining myvegas comps with offers

So I have some smaller offers from mlife... 2 free nights at excal or 1 free night at mgm with 2 night stay.
My question would be can I combine those with myvegas nights?

My ideal plan is to stay at mgm and to have significant other use her myvegas for sunday night, I use my myvegas for monday night, since i am on the room for both nights, that should be a two night stay and i should get tuesday night free, then pay casino rate for wednesday night.

Will that work?

Also for mgm it says a west king is comped through myvegas, Is that true? can I not get two queens?

 

I've seen it posted on an FB group multiple times that you can't combine an Mlife offer with a MyVegas free night.

As for the West King, you can't get two queens because the room is too small.