[@Regitnui] Oh...haha...yes, yes he is. ^^

Only if he'd want to get involved. Does he have healing/medical training? Does he have escort training? 
I don't know if he'd even find out about why it (might be) is so crowded there until he asked someone or something. I would think he'd look for Asuna and/or her family. It's really up to you. 

Here's what we can do if you're really unsure:
Start writing a post in a Pad and I'll read over it as you go and insert any plot-important details to possibly steer him in the right direction. 

Otherwise, you're free to take liberties explaining the specifics of the city, if you'd like. I'll be inserting something after your second post.

Same goes for [@Utrax]. Once Theo gets to Rustboro, I'll be introducing some plot points for him to interact with.

Don't worry, you two. I've got some pretty interesting plans.