Is 30 minutes a really long time? you can do it. The best groups I have are in the city and I have to use a bus, a commuter train and then a subway to get there. It takes about 45 minutes door to door. If the meetings are scheduled at non-rush hour times, it takes an hour.
If it is rush hour and the system is working, it can be as little as 35 minutes.
But, if I start to grumble a bit, I always remind myself: what would I be doing with that hour, that hour and a half for the meeting, and the hour home? I would be drinking senselessly, and feeling miserable at the end of the night.
Whereas with the meeting, I feel vitalized at the end of the night.