Lucky you!
Keep an eye on the weather forecasts - depending on your seats, there could be limited shade, so sunblock/hats/sunglasses will be a must on a sunny day. Also it can get quite cool once the sun goes in, so bring a light jacket or some sort of layers!
Make time to walk around the grounds, you'll hopefully catch some outside court matches and you'll truly be up close to the players!
Also if you're after souvenirs, the large shop (below Court 1 IIRC) is worth a visit, make sure you avoid match finishing times though as that's the most crowded.
If you're a HSBC customer, bring your cards and you can collect a voucher for free strawberries (if they're still sponsoring this year!). I think you may be able to just show your app on your phone now.
Check out the schedule of play the night before and figure out who you want to see and who you'll be happy to skip, even on Centre. You can take that time to grab food, walk around the outside etc. It can be a long day so pace yourself!
Most importantly enjoy, am very jealous!!