I too was at Cairngorm on Monday and I have rarely had better snow conditions in Scotland.
The carpark T bar was running but not the Sunkid or the Fiacaill Poma.
The Cas was pisted both sides of the uptrack. Further progress up the hill was delayed by a few laps of the Fiacaill Traverse down to the Zigzags on excellent snow. It was pisted but there was plenty of opportunities for off piste here as well.
The M1 Poma upload area was a bit thin with a few brown patches appearing but the uptrack was good.
The Ciste T bar was the only uplift running until about mid day when the West Wall Poma opened.
The Ptarmigan T Bar was not running but the runs above it were being pisted. The boxes for the spring loaded T bar tow ropes were attached to the tow wire but there were no T bars attached to them.
The white Lady was accessed by a narrow corridor between the Ptarmigan Restaurant and the M1 tow. The Lady was about 3 piste basher widths wide at the top going down to 1 basher width wide near the bottom where it funneled into a short steep section which was well scraped by people (including me) side slipped down it.
The Ptarmigan Restaurant was open for toilets, hot and cold drinks and sandwiches etc.but no hot food.There was a distressing lack of chocolate bars for sale and I had to make do with a healthy option. The only black mark of the day

The staff were apparently transported up to the restaurant by skidoo.
The snow conditions lasted very well all day and didn't get too soft even at the carpark.
A great day. Hopefully there will be a few more like it this season.
N.