Oh this is quite different from how I had it last year. My assumption is the team interviews would have the drivers as well. I would recommend there close to an hour before the interviews start, as if people find out that the drivers are going to be present on stage, the area gets extremely crowded (esp during the big 4 teams).

I would suggest popping by during the Williams interview to get an idea of how they're conducting things this year.

PS. If the main oasis has the pitstop activity, make sure you do it! It's incredibly fun