As others have said take it very easy and plan everything well in advance. We went up to Aviemore on a Friday night at the end of January last year, the A9 was closed due to snow so we went up to Fort William and across the A86 to the A9. Now that was some serious snow.
There was a car in front of us at Spean Bridge which turned back as the snow was getting really deep and still snowing heavily which left us on our lonesome. We just drove real easy, there was no way I was drifting a honda accord estate round corners on a single track road. The section along the banks of loch laggan was very scary and our son was terrified. We thought once we got to Newtonmore and Kingussie things would be easier, but the snow drifts made driving quite difficult. However we got there in the end.
I'd say it was interesting rather than fun. Just keep braking to a minimum, stay well away from other vehicles, and make every movemnet a slow controlled one. All this drfiting round corners wouldn't really work in proper thick snow, you'de just end up stuck in a snow drift.