@Stopdropnroll what day are you there, and would you be OK with leaving your seat and missing the start of a match so you can get some food?
I had the afternoon tea last year before a singles final and while it was lovely, I personally wouldn't want to use it as something to dip into when wanted, partly because if it's a warm day the cream and any chocolate in the cakes won't last well and partly because I'd personally find it fiddly to get all the food out of the packaging, and do things like prepare scones and jam, while in my seat watching the tennis. It comes in one coolbag per two people, with each type of item in separate packages inside, so a pack of sandwiches, a box of strawberries, a tub of cream, boxes of cakes, I think there was some salad too, plus a hard plastic plate to eat off with plastic cutlery. You may be fine with that, in which case I do recommend the food.
As you know play can go on late so it's hard to plan for when you will eat, so I do take stuff I can dip into, just not something like the afternoon tea. I tend to take some fruit, cereal bars, crisps - easy to eat at your seat. I then decide what to do about an evening meal as the day goes on, depending on how hot the day is and whether I need a break from the sunshine, on how long the first matches last, on who is playing next. Sometimes I pop out and buy a sandwich and bring it back to my seat, sometimes I leave at the end of one match, buy slightly more substantial food, eat it, then go back to my seat, having missed the first part of the next match.
There is a lot of food to choose from at the places where you order at the counter - sandwiches, salads, burgers, fish and chips, noodles, curry, things like teriyaki chicken and Jamaican ital stew, and probably other meaty things (but am vegetarian so don't take much notice of it). I've always found the food fine, sometimes portions have seemed slightly small. There is also a self service restaurant, and a waiter service one but haven't eaten in either so can't comment on those.