I went to the St. John's/Georgetown college baseball game at CitiField and I thought I would post some notes on the food. I just thought to do it, so I am just working from memory. As far as I could tell, all of the concessions were open, but the menus were limited. There is a premium food court on the field level where Shake Shack, Blue Smoke, a taco place and the frites place is located. Blue Smoke had pulled pork (around $7.50) but not st. louis ribs ($10). I only had the frites at this food court. They were ok, they were like good fries, but they were not frites. There were three kinds of aioli available, ballpark aioli, a blue cheese and a spicy pepper one.
On the next level, they have an area called Taste of New York. Mama's of Corona is located here. They have an expanded menu of additional sandwiches and a dessert menu. Also here is a deli, and things like gummy bears, other candy, etc.
Throughout the ballpark are hot dog and burger stands. At least today, only the burger stands sold fries. I passed a couple of bars with tv screens. I walked through the Caesar's club, which has seating areas and concession stands.
I have excelsior seats for the Saturday Boston game and I am hoping to dine at the club and I will post then.