I like to know if there is any place where to rent chairs and Umbrella.

There are so many hotels in the area that have the chair and umbrella rentals, so if you're staying in one, you're probably set. Otherwise, I don't know for sure if South Point Park has them, but you can pay a fee and rent from the neighboring hotels that are basically at South Point too.

I did not see any for rent when I was there and that was about 3 wks ago.

Or bring your own