Visit Your Friend's House ... Err, Island
Yes, it sucks that we can't go visit our friends and keep up with all the social events we had planned for the spring in real life. But that's not an issue for your Animal Crossing character. He or she can go to visit different friends at their homes on your island (NPCs or non-playable character friends) or go to the islands of your real-life friends if you've exchanged friend codes. It's not quite the same as an IRL meet-up, but it's close!