Emil, the best thing for you to do is just go up there and see for yourself.
I wouldn't cross any cracks in my vehicle, but I know for a fact, there is plenty of good ice. The shore will be fine in the morning, but expect lots of traffic with people hauling off huts etc. I'm not sure how things will hold up when its time to come back in.
If was you, I"d head out of innisfil if your set on driving out. There are no cracks to cross to get to the fish, just keep in mind the traffic the shoreline is going to see over the course of the day. It can only take so much. The cracks I crossed yesterday on the east side of the lake were looking pretty nasty. There was one that was open about 10ft, with whitecaps and water blowing onto the ice. I'd say that's all frozen now, and will probably look safe to drive over........just be careful out there. Get out and take a look at anything that doesn't look right before you drive over it. Bring your spud.
I'm just going to walk. Better safe than sorry.
Sinker