I think the first weigh-in is the easiest.
You're motivated, you've worked the program like crazy, and you can almost guarantee a big loss thanks to water weight and body shock.
-5.6 lbs today and out of the 280s, all in one week. Win-win.
Now, to the hardest weigh-ins...all the rest.
I like the leader. She's a decent mix of funny and serious, and has a good presenting style.