Welcome, @allent2000 
I don’t know if there are any active forum members in Tavira or nearby, but I have no doubt that you’ll find people to connect with once you’re here in Portugal. I expect many (but not all) of them to be expats - there is a large expat community in Tavira, mostly British, I think.
On another note, here’s a topic about retiring in Portugal, which you might like to read: Retirement and The Elderly in Portugal