-Are there bbq grills? -Is so, how many? -Does it get crowded on saturdays? -Get crowded from what time on saturdays?

No grills that I know of, and generally not very crowded, even on Saturdays.

I do not remember seeing any grills. There were chairs and umbrellas. It was not very crowded when I was there. I was there in the afternoon on a weekday. Some parts of the beach have some rocky areas

Yes. Few. Depends if low tide coincides with daytime. See above.