How to play classical chess OTB

I have played rapid and blitz tournaments but not classical in otb. I have a tournament of classical after 2 months

Can you give me a suggestion?

Because seeing classical chess takes time

bring water and snacks. Classical OTB is exhausting. Also horse moves in L shape

and put on more than your underwear!

@Ultragoodrapid said in #1:

Because seeing classical chess takes time
If you keep thinking like this, you wouldn't be able to make it.
If you focus on game (you are playing), then you wouldn't think about time at all.
Classical chess is about patience and composure.
You have enough time on your clock to think properly.
Firstly, playing classical games on real board with someone for practice of how you manage youself accordingly to time format.
Then do preparation of opening set up to play to build foundation of game. Revise them thoroughly.
And don't spend too much time in playing opening on board there. More time is required in middle game to devise strategy.
Stop playing fast chess be it online or not. Do play many games to get feel of playing OTB classical.
Think before you touch piece else you would be forced to move the piece you touched according to touch rule.
When you blunder (realising after playing move) don't get tensed or nervous. Try to act normally and look only at board. Also, try looking at opposite side of board as eye contact factor is used by players while playing against someone to know about position.
Keep yourself hydrated well enough.
Lastly, one requires a cool and fresh mind beforehand. So, get a proper sleep day before tournament.
All the best!

Because a lot of online people are no doubt playing in their underwear. Was that really so tough to figure out, OP?

Why Not lol

In full disclosure. I’m naked. So there’s that ....

Playing chess OTB is much better and more interesting than playing online, there is nothing better than playing chess OTB, wether it by friendly (no clock) or tournaments.

Remember the rules.
https://lichess.org/forum/general-chess-discussion/what-are-the-face-to-face-chess-rules#2.

Don't drink too much, or you will often go to toilet. Eat, sleep enough before go to tournament.

Good luck on your tournament

Play well , Try to be as relaxed as possible . Always take 30 seconds or more for each move . look around the board to see if you are missing any tactics. You should be quite better if you do this. I recommend you write down the time you took for each move (write the time in your scoresheet eg. If starting time is 90+30 aka 1hr 30mins . If you took 2 mins write your time as 88) then you can try to improve on the place where your lagging