Depends on where you are.
In Russia it would be an insult to turn down a drink from a host - -
But Russia has one of the worst alcohol problems in the world and and the developed world's shortest expected lifespan.
Even in France, a drink offered in friendship might seem a little rude to turn down. But a "Non, merci." should suffice.

In the U.S. there should be no problem - especially if you choose your companions prudently.
I started my sober journey many years ago with a bike trip.
Back then you had to carry AA meeting books to find meetings.
Now, you can find meetings everywhere on line.
Hitting meetings in small towns across the country is a great way to strengthen your sobriety.

Prior to getting sober, I used to seek out the wildest people - and usually found them.
The same applies to seeking out sober people - you can usually find them.
Nobody is going to tie you down and pour booze down your throat.
The only person who might do it is - - - you.
That is your choice.