Are there concession stands in or near the park?

Not in the park but close by within 3-4 mins of walk

Not Concession stands, but two or three food trucks.

Not in the park but a lot of options as you walk on the streets close by. Theres something equivalent to Whole Foods - cant remember the name.

There is one deli, you csn get cold drinks, water chips sandwiches etc. Some food trucks also I saw with ice cream and one with south american food.

Yes. There is one. Beers, food, soft drinks, ice cream, etc. There are also food trucks around.

There's one and there's several food trucks/ice cream trucks. There are some restaurants nearby