It's really hit or miss. We happened to run into Gumption on our Jan trip and he called his mom to see if she was opening. She did in fact open that day and we had one of our best meals there. There was no menu, no choices. You got what she was cooking but man was it good. No issue using lounge chairs but that may be because Gumption was the one to call for us.
Plenty of other times there has been nobody there.
She could be so popular if she was just consistent!