Are you able to purchase a bottle to drink and relax there with friends or is that only reserved for large parties? Is there a type of sitting area or just a store front? And are there meat and cheese trays available?

You are able to purchase and relax there. You shouldn't need any reservation. They do have regularly scheduled events that host food trucks and music, so be sure to check the schedule before bringing a group if that's something that you're looking at. I do not recall a food menu, but they do have a shop in there with food stuff for purchase, so there may be more of that offered on a kitchen scale when food trucks are not present...

You can buy a bottle or several, they have food trucks,they also have Sunday afternoons in the winter time. Great place to and just have fun.