Yes ample parking but you have to pay

My guess would be no, since it is a german holiday. Also the 26th is a german holiday, so a lot of shops will be closed as well. Tip: Check out the Gapa Homepage for events, sorry wasn't able to insert the link. If there is snow in Garmisch you could hike or take the cable car up to the Sonnenbergalm and then rent a sleigh and sled down hill. It's a lot of fun. Some cabins have sleds to rent, also the trail where the have the Hornschlittenrace is good trail to sled down. Hope this was a little helpful. Have a nice stay in Garmisch.

The bus system is wonderful as is the train system. You can go from Garmisch to Innsbrucke very quickly and the ride through small villages and scenic hills and valleys is great. I would also take the train to Mittenwald, another small town with several attractions including the violin making school and a section of the original Roman Road. There is bus service to Oberammergau and all of its mountain culture and Passion Play history. Train service will also take you to Rothenburg and its beauty and history. The local bus service is equally outstanding which includes service out to the Zugspitze. If you don't yet have a hotel, check out Hotel Rheinischer Hof. They offer a free local bus service card. Make sure you visit the Partnach Gorge and ride the tiny cable car ride.