Probably
Playing on a board vs playing online
Not as much as I thought it would. I practiced a few times by playing out online games with a real board, but it didn't take long for the 'board vision' to translate fairly well.

If I'm only playing online for a long time, I lose my "chess view" of the board - especially in fast games I don't see anything on the board, hang pieces, miss obvious threats, etc. - however it's better if I use the 3D view in online chess, at least the pieces do look more like the real thing ...

Playing OTB with a friend is similar to playing online but playing in a tournament OTB for prizes is very diffrent at least for me.

Well, for computerized chess, usually people prefer the 2D depictions. 3D on screen may be interesting for a while, but it in no way matches proper real life 3D.
Maybe, but still I feel it does less damage to my "physical board view" than 2d chess with the symbols ...
If I have no access to OTB chess for longer (though I usually go to my club once a week), I play slow games against the computer which I play out on a real board as well.

Playing OTB casually with someone you know, is a lot different to playing in a tournament with someone you don't know, and people occasionally looking over your shoulder. If you don't have nerves of steel, OTB tournaments are not for you. It can be very intimidating, and takes a while to get used to it.

I've heard other people mention that, how people looking over your shoulder as you play is distraction/intimidating/annoying whatever. I've never thought of it like that, I wonder how many people it bothers vs people who don't care.

To answer the OP, 2D to 3D and the other way around takes some games to get used to the new view. If you play both regularly then the effect isn't noticeable.

I had been playing competitively for almost 30 years before I played my first game online, so a real board seems most natural to me. But it's not too difficult to adapt to online play, the board is just like a book diagram and similar to the way I visualize positions blindfold.
The 3D computer boards I've seen are difficult for me to play on, oddly enough.
Obviously a fellow old geezer !!

I don't know which is easier but I find playing OTB, win or lose, to be much more satisfying than on a PC.

I find the Internet better suited for blitz as it's easier to click the mouse than to move a piece and press the clock. Also you don't need to worry about illegal moves and such. In OTB, I prefer to play without clock usually.

There IS a difference. Experienced coaches advise to use a real board while training (at least sometimes). Some people even buy special electronic ones that are compliant with chess software
Reb, please avoid postng racist slanders for no good reason. You racist mcracist.
Age is a race? News to me...
If u've never played on an actual board, ur going to feel a little unconfortable. But, if u've played a few games on a board, your brain is going to get more confortable and it will not be a big deal... Some people dont like to play on boards, but, in a tournament, it is still a good thing to know how to play on a board.
I've heard someone say that playing on an actual board is really different from playing a game online. So if you've played many games online but never played a game on an actual board, will it effect your gameplay?