Does anyone have a fitbit connected to their MFP?

Yeah, I don't entirely trust the numbers either (mainly because I wake up in the morning, login to MFP, and already have a 300 calorie adjustment just from my sleep/walk to the computer?! I'm a super active sleeper?). Anecdotally, I typically think it's safe to eat about half of them back and still maintain weight loss. If I end up eating all of them back one day, I don't feel bad, because I know I was active throughout the day and probably needed them.

I have mine synched also. I think the calorie burn that is on fitbit when you wake up is based on your BMR. I have worn my fitbit when running with my Garmin and they are pretty close. I didn't feel the 1200 calories that MFP recommended for me was enough based on my activity level, so I did a search on "how many calories do I need" and changed my goal to 1300. Now when my fitbit and MFP synch....calories remaining are usually within 50 of each other.

I spent a while fiddling with the settings as I felt it was being way too generous with the calories!
I originally had it set to lose 1lb a week (which SAID 1175 calories... I figured I'd just go over a bit) but in reality it turned that 1175 into hundreds more! I have a fairly sedentry lifestyle, it was just adding loads whenever I walked to the train station and back!

I ended up altering the fitbit goal to be harder, so my calories dropped down a bit. Now I only seem to get an adjustment of 100 or so calories on a normal day, which I find okay.

Also it's worth mentioning that fitbit calculates your calories by taking your BMR into account too. So you will often find in the morning you have burnt calories without even moving... that's just it's way of showing that you're alive
The fitbit adjustment on MFP can alter throughout the day too, so be aware. If you're really active at one point it may give you a tonne of calories to eat... but it'll slowly take them away if you sit on your butt all evening. Learnt that one the hard way after I'd ate them all!