It can be hard to get a personality fixed 'on the spot', so it's okay to wander and search a bit for the right tone. You'll have some time before the adventure really gets loose (I'm guessing about one week real-time). Even then, there'll be plenty of time for interaction with each other, which should help with getting further in character.
For those who are in pairs, just continue your discussion while I advance you on the timeline. I'm pretty busy at the moment, but I hope to get some updates done tonight.
Fanog