Animal Crossing New Horizons will hold a special event for the wedding season from June 1st, which will last for the entire period of June, when old friends alpaca couple will appear on Harv's island. Players need to help them complete their wedding anniversary photos, and then special wedding themed furniture can be obtained.

 
 

To start it, you just need to go to Harv’s island, which you can access from the airport. There, you’ll find Cyrus and Reese, who want you to take over staging and taking photos that recreate their past, presumably because Harv is wicked creepy.
 
When you arrive on the island, you’ll meet Harvey conversing with the special guests of Wedding Season — Reese and Cyrus! They’re celebrating their wedding anniversary in June and need your help decorating for their photos. After you meet them for the first time, Harvey will take you into his Wedding Picture Studio, which is unfortunately rather empty. That’s where you come in to help decorate it for the lovebirds using a brand new set of Wedding Season furniture! When you’re visiting Harvey’s Island on subsequent days during June, make sure to talk to him outside the studio each day to enter the Wedding Picture Studio. If you just walk straight in, you’ll end up in the regular non-event version.
 
All the Animal Crossing: New Horizons wedding season rewards
Talking to Cyrus each day will unlock a new range of Animal Crossing: New Horizons wedding season items, so make sure to come back every day through June to see what new items he has to offer, including different colour variations we assume to match each of the themes Reese asks you to create.
Wedding bench
Wedding decoration
White wedding wall
White wedding flooring
Blue wedding rug
 
Every day, she’ll give you a piece of the wedding furniture set, as well as some Heart Crystals. The more event furnishings you use, the more Heart Crystals you get as a reward, capping out at 11 for the first seven days and 15 for the days after that. There are 24 items in the wedding set, but you won’t need to do the event for 24 days to get them all. Reese will give you seven items the first week you complete the photoshoot: a Wedding Bench, Wedding Table, Wedding Flower Stand, Wedding Head Table, Wedding Pipe Organ, Wedding Arch, and a Reese & Cyrus Photo Plate. Any remaining items, as well as duplicates of what Reese rewards you with, will be available to purchase with Heart Crystals.
 
That’s all we know about wedding event in Animal Crossing New Horizon, hope it can help you get familiar with this event.