All my friends and family know what I do, and I don't have any issues telling people either. I've never had a bad reaction, but generally they don't understand what affiliate marketing is, so I usually just settle for "marketing for an online casino", then I sometime get asked if I deal the cards.
I think casino and poker online in the uk isn't as socially talked about as sportsbook, so when I worked in sportsbetting people could relate to it a lot more than a casino.
Head of Client Services | TAG Media