I'm not FIREd yet, but I've cut back my work hours, and I tend to do all of my work each month in one big chunk, so I'm free the rest of the month. As an introvert who can pass for an extrovert, it's a lot easier for me to be social when I haven't just spent 12 hours interacting with people at work. My biggest challenge now is finding new friends in the town we just moved to.
Making friends as an adult isn't easy. I'm looking forward to having more time to visit friends who live out of state (and I already do have more time than I used to, so those friendships are thriving), though I realize it's important to have local friends, too. I suppose this is an introvert thing, but it's difficult for me to go to events or even one-on-one get-togethers that center around small talk. I do it sometimes because I know that's typically how deeper friendships develop, but it's frustrating to think that many, many hours of investment only result in a small chance of making one or two great friends. I just don't enjoy the shallow early stages of getting to know a potential new friend and would rather skip ahead to the deeper levels, but I know that's not how humans work.
As for salads, my primary reason for not ordering them at restaurants, petty thought it may be, is to try to stop perpetuating the myth that all vegans eat is salad! (And tofu. I don't eat tofu, either, except on very rare occasions.)