I see that you have already had your interview, but for future reference I'll throw in my 2 cents.
Be ready to answer why you are leaving 121. One reason they may not be interested in sending you to school is appearantly you are still flying for a regional. Why would they want to spend several thousand bucks on you if you may go back, or not leave the regional? Of course I'm just guessing, I don't know the whole situation. They could be a bunch loosers. Like G100 said, ask questions. Although 8 hour waits at the FBO are not that uncommon in the corporate world. That's the whole idea. You leave point A, go to point B. Your pax have meetings all day then you return them to point A so they, and you, can sleep in their own beds that night. However, you shouldn't have many days that exceed 135 or 121 duty limits. If there are, they should allow you to rent day rooms, or make some other arrangements. If not....red flags!! Big ones.
The team player part is a REAL biggy. In 121 you fly with the same guy for a month or how ever your particular operator does it. After your tour with that guy it may be months or even years before you see him again. In the corporate world, you have to sit next to the same guy, (or few guys) almost everyday from now on. How would you like to do that with a complete a$$hole? I like what g4800xp said. The new guy had tons of experience, but wanted to learn the job and wanted to do his share of the work. I would hire a guy like that in a heartbeat. Get along with people and let them be able to get along with you. In realestate, the three most important things are location, location, and location. In a corporate flight department it's attitude, attitude, and attitude.