I've thought about it and have a solution.

Check in, wash face, get receipt leave.

Check into non Hilton property for that night (actually it is a free stay for me) except for the money I pay at the Hilton property.

Next night, switch hotels to new Hilton property and stay there. Switch again, to another Hilton property and stay there.

3 more stays gives me my 50K.

Goodie for me.

Thanks everyone.