My sim also lives in Sulani, and of course he swims a lot. I can't say I've noticed him losing weight from all that activity. He's pretty much stayed the way I created him. I've had a couple of grand-meal-holidays, but haven't let him eat all that much. Usually he cooks the fish he catches, or grab a quick meal. Other than swimming, he's also using the sparring dummy (LOVE that thing!) and doing a lil bit of yoga. But yeah, I'm really not sure swimming contributes to weight loss at all, which it really should.
I've only had the neighbours come by with food once, my sim isn't home much. He's usually been out fishing and cleaning up Mua Pel'am (its fully restored now, so guess there won't be any more trash to clean up). Also exploring the cave, in hopes of getting the kelp :# no luck so far.
