I have a question

To those who own Smash Ultimate, how does it feel like to play with sideways Joycons? I think it might be annoying, so I might buy a Pro Controller before Christmas. But in case I don't get one, I'll have to use Sideways Joycons to play the game with my bros since all I have is two pairs of Joycons. Answers?

You could buy grips. I use them all the time in MK. Usually they create larger places for pressing SL and SR.

its pretty shitty and not something i would do on a regular basis esp if you care about being good at the game. but i did use this method to casually play with my sister and we had fun. so if its just once in awhile i wouldnt spend the money, but if it'll be a frequent thing then yeah i'd go for it

Would definitely not recommend it, it's just way too small for a fast paced game like this

Personally would recommend gamecube adapter if you have those controllers, or a wired pro controller which costs way less than a wireless one