a place to sit at a big rodeo. often full of drunken buckle bunnies lookin for a good time, and dirty old men who love looking at my tight cowgirl ass. grandstands are probably found in other sports as well.

when you're hungover as shit after a spending a night drunk as a skunk

To show obvious wealth, like flexing without trying.

Just like a one night stand... but for a whole week. With 3 women. At the same time. Covered in chocolate sauce. In a silk hammock. In Jamaica

Grandstand, or grandstanding, means to do something seemingly normal, like sitting down, in an extravagant way in order to gain attention. It can also be used in politics as a verbal tool or in any sort of oratory action really.
Basically, over the top to be noticed and hopefully admired.