There is a second cupholder on the passenger side someplace near the glove box or something. I'll check tonight, I have one of these right now for test. It certainly is dropped right here from euro-land, otherwise certainly they would have added 15 cupholders.
I had a feeling that you'll get this car for evaluation...

I sat in the Astra and I looked at this in particular. There is only one cup holder on the center console, far back, which makes it very uncomfortable for the driver to use.
There are too more for the rear seat passengers.
The Euro models don't have any for the front passengers at least. The place where the cup holder is in the NA version it's just a little cubby on the Euro models (from the pictures I saw).
Two front cup holders and two rear it would be just fine. Bottle holders in the doors are handy too.
I don't drink coffee in my way to work, but occasionally, on longer trips I might. It's nice to have the option, but obviously not having it, it wouldn't be a deal breaker for me at least.
I'm looking forward to reading your report. If I'd be in the market, I would really consider the Astra.
Are you getting the manual or auto?