Hi Jhonny,
I would say it all depends upon your own mental strength. If you think you are strong enough to be around people or social situation that involve alcohol and not give in to temptation then you don't need to isolate yourself from that drinking scene. But I wouldn't be putting that kind of temptation in my way especially in the early days of sobriety.
As for isolation, you will find the world grows in time and new or forgotten experiences once you stop drinking. A whole new wonderful world opens up to you. There are soooo many things you can do that don't revolve around alcohol. Personally, once I gave up drinking, I found my world became less isolated.
Good luck on your journey.