Simple solution is when and where the individual wishes to compete they should be allowed to on an equal footing. They could challenge the rules if they wished I'm sure. Equality in all things.
So the man asks "Who buys the drinks"? Woman says "Both of us, but it still comes out of your pocket". Man "OK dear".:
under his breath, "Women".
The Vegas comp, I'm sure the guys competing would shudder and smile a little at the thought of the little ladies being there on the line with them.
Especially when they have an equal chance of taking away the top prize. Less of an advantage having higher poundage indoors.