Hy, I would like to have a straight answer. 2023 february something Blizz announced that there will be an elevated chance on the first kill of the day for events, and then a lower chance for the rest of your alts to loot mounts, special items etc.
Source: Wowhead
"The Love is in the Air world event is right around the corner, and we’re sharing the love this holiday season.
We’ve heard your feedback on the frustrations with X-45 Heartbreaker’s low drop rate and feeling the pressure of having to farm the mount by cycling through as many alts as possible every day. From now on, the first Heart-Shaped Box you receive each day across your Battle.net account will have a greatly increased chance to contain the X-45 Heartbreaker mount.
Any subsequent Heart-Shaped Boxes you earn on your characters after the first each day will drop the mount at the previous, original rate.
Love is in the Air begins on February 6 at 6:00 p.m. GMT in all regions. So spritz on your favorite perfume and head to the Shadowfang Keep event dungeon to defeat Apothecary Hummel for your chance at the fantastic flying fuschia fuselage you’ve fancied far too fervently for what seems like forever.
Good luck adventurers!"
Then 2024 summer they realeased the information that ONLY the first kill of the day will grant you a chance for looting special items. The rest of your alts do not count, but the next day your first kill will elevate your chance a little. Each day increasing your chance for looting special items.
Source: Wowhead
" Updated Loot System
We’re changing the way the loot system for the holiday boss drops work. We have increased drop rates significantly for the first boss kill on a single account. Only the first attempt on a single Battle.net account will be eligible to receive the item drop, however. For each subsequent daily attempt on the boss with a single Battle.net account, the chance for the item to drop will increase and continues to accumulate for each failed attempt. This change will allow players to spend less time working to earn a specific dropped item while providing an increasing opportunity to get that item during the holiday."
Now, Brewfest is here in 2024 and all my alt army recieves the exact same epic quality Keg-Shaped Treasure Chest and it has only one ID according to Wowhead.
Maybe an unpopular opinion but I think that the 2024 summer change was a Great Idea with a capital G and I, cos I do not have to spend 10 hours a day queuing for dungeons on alts. And I really want to know which loot option is valid now, but could not seem to find any blue post for this event, my alts still recieving epic keg chests, and some special items from it, tho no mount so far, only toy, trinkets etc.
So which is valid? Only one loot / day / account has a chance on mount and saddle? Or first loot / day / account has an elevated chance and then lower but still chance on the rest of 49 alts?