Saw this reply on Reddit. Thought it was solid
Hello friend, glad to hear you're gonna make it to Wrigley, should be a blast. Here's what I do whenever I take someone to Wrigley for the first time...
I almost always take them to Glenn's Diner for lunch, which is ~1.5 miles from Wrigley. So if you Uber there, its an easy walk that lets you get a feel for the surrounding neighborhood. Great seafood and solid beer selection. If you arent into seafood dont go there.
Walking into Wrigleyville you'll see a ton of bars/restaurants. Everyone has their favorites but if you get into Wrigleyville early enough I'd recommend a beer or three at Murphy's if they have outdoor seating available. Its really cool to see the hustle and bustle of a game and all of the folks coming and going.
From there either settle in and enjoy the environment or go explore the other bars. I like Merkles, but thats more of a personal preference, as one of the owners/managers has always been pretty great to me and remembers me every time I wander in.
If you've got bleacher tickets, which I recommend, head in when gates open and check out BP. Maybe you'll even catch a BP ball. Or maybe you'll see someone get smoked by a ball because they've got a beer in each hand and arent paying attention. (Yes, I saw that once, guy was fine and took a shot to the arm, beer explosion everywhere) If you have seats in the concourse area you can wander all around the park EXCEPT the bleachers, so feel free to head in early and explore the area. When I sit in the concourse I like to head up to the outdoor concession stand under/behind the press box. You can also people watch the masses of people heading into the park from up there.
After the game if you're hungry I'd recommend Dimo's, they have unique pizza options like mac 'n cheese, blt, etc. Served by the slice too, so easy to grab and go.
Hope that helps. Feel free to ask if you have any questions.