I went there last year for the Rally and recently this year for a holiday. A very beautiful area and I'd recommend seeing the cathedral in Strasbourg, its superb. Also if you have time, a trip down some of the Route du Vin meandering through pretty villages, stopping off to taste some wines. For the rally if its anything like last year pretty much every stage will be overflowing with spectators so get there early. Best stages for me were the Ballon stages oh and don't bother with the stage through Haguenau, way too busy.