Hello Kitty Island Adventure is very fun! I was unsure at first when it pertained to buying it, due to how pricy it seemed to me. When I played it on Apple Arcade for a bit, I got bored fast. Probably because it was on my phone; which is something I'm always using for social media and whatnot ><
But since it's on PC now.. I'm really enjoying it! It stinks that my favorite (Pompompurin) isn't the easiest to level up friendship with, early on in the game anyways. At least there's my baby Pochacco! I also love Hello Kitty a lot c: I love making her Apple Pies, lol.
I know the price really pushes people away, so if you really want to wait until it's on sale; I say go for it. I'm just impulsive and ended up purchasing it anyways.
I have about 5 hours in the game so far, and I find it easy to pass lots of time in it xD I love collecting the materials, too. Such as sand-dollars, sticks, pineapples, coconuts, etc.
I know when it comes to playing on PC versus the Switch.. whenever I open the game on Steam, it tells me a controller is recommended for a more comfortable and easier gaming experience. Although, I just play without one. I use my keyboard xD But there are times I feel like a controller works better when playing on PC. The movement controls are kind of complicated, like- when you're trying to take a turn while you're walking, it's difficult. I feel like using a joystick on a controller would make it twenty times easier. I always get nervous I'll fall off the cliff when I'm in the puzzle rooms!

So, if you don't want to deal with that- I either recommend the Switch version, or having a controller handy if you decide to get the Steam / PC version! :33
When it comes to Standard or Deluxe.. I heard the Deluxe version just gives you a ton of extra items from previous events? So, I personally wouldn't go for the deluxe edition.. unless if you want extra items and clothes ^^ There's a couple videos on Youtube explaining the difference and whether it's worth it or not. I may.. end up buying it >_> Unsure. I already have the standard edition, so I don't know if it'll let me purchase the Deluxe? T^T
Anyways, I really do enjoy this game. I've been waiting for it to come out on another platform for sooo long!