I just played through all of October and finished the Halloween event which was super cute, so it is very hard for Bunny Day to live up to that.
Either way, I think it is alright. I did not participate in it since I already finished everything last year, but I appreciate that the eggs weren't as annoying.
As for the event itself, its biggest strong suit for me is the NPC related to it - I immensely enjoyed Zipper last year and was happy to see him again this year. The experience of running into him for the first time, seeing this huge creepy shadow lurking in the distance only to discover that it's a cute yet slightly unsetteling bunny was probably one of my favorite moments of the game. Like I said, I just played through the awesome Halloween event and as much as I enjoyed Jack, he's got nothing on Zipper.
The Bunny Day items are fine, I guess. I'm not into Easter in the real world and I'm not decorating seasonally, so items that make it onto my island have to be usable all throughout the year. Last year's items were a very mixed back, the only things I liked and actually use are the Bunny Day lamp as well as the Bunny Day table. I also ran around in the Wood egg dress all the time since I didn't have Able's unlocked and it gave me somewhat classy retro vibes. The items sold by the Nooklings this year are a huge step up overall and quite gorgeoues, however not for me since a) mostly too specifically Easter-related and b) very pastely, dropping right the moment that I got rid of all of the pastel colors on my island. Only the Bunny day topiary will be very much used and cherished.
Lastly, when it comes to how much fun I've had with the actual activities of the event, I have to say it was alright. Not nearly as entertaining as Halloween, but I do remember enjoying it last year and being excited about what Zipper was going to give me. It wasn't great enough for me to do it twice, but I think it's cute that the animals are clearly enjoying it and seeing Chops dressed up in a pastel colored dress did make me smile
Overall, I would give the event a 7/10.