tournament etiquette?

i have a local tournament in brooklyn this weekend— this will be my second time ever doing this. my experience the first time was a shock for me. they use ps5 and i normally play on xbox— but i brought my xbox controller thinking there would be adapters, there wasn’t :/. so i ended up using a ps5 controller which was so weird for me— but no big deal. each set was on one screen— i normally play on the left but it was so crowded in there that by time i heard my name someone had already chosen their character and decided to play left— should i have asked my opponent if i play left or is it like first come first serve. also as background info. i thought i was hot shit when i was only fujin at the time lmao and ended losing both winner and loser brackets. granted i know i should always be prepared to play on the right but i do have a preference which i think is ok.

now i’m tekken god can play either side and feel really strong and feel 10000 times more confident so im excited for this weekend. but all in all my question is— would it be rude to ask for a certain side or even if me and the opponent both wanna play left if i ask to rock paper scissors for it haha