OlliePolly and others - don't panic about Esprit!
We have had 3 holidays with them and have booked again for next year. We had 2 good ones and last year's was terrible BUT last year in the Alps was terrible for many companies because the weather was so extreme and many people got cut off from the resorts. We couldn't get into Tignes/ Vald'Iserre due to avalanches, and at the time it was hell - 3000 families turned away looking for overnight accommodation. To be fair Esprit found us somewhere - albeit 50 miles away - but at least it was a warm comfortable hotel. Many families with yound kids spent the night on a coach or in school halls or army barracks .
Esprit chalets are very variable. A few years ago they acquired a number of chalets from Crystal and these are the old tatty ones. IME they also attract the old, tatty, less than perfect staff (last year we were in the Lavachey in Tignes).
My recommendation would be to go for one of the better, newer chalets - it's also where the best staff go.
I have never had any complaints about childcare, it's been excellent and my two (6 & 4 ) have loved it. Have never heard about 'lost' children - suspect it's an urban myth - and to be honest, I can't see how it could happen.
We're certainly not stuck up, but nor do we ski with our kids all the time either because it's a holiday for us too, and edging down a blue run with a 4 year old all day is not my idea of fun. We typically booked the kids into lessons and lunch and then spent the rest of the time with them sledging, snowballing etc - seemed like a good balance. On the one morning our 4 year old didn't want to go we just kept him with one of us, and did some gentle slopes.
Mummydoc - personally I would suggest the SnowClub for your DD for at least part of the day. However sporty she is, skiing really is tiring for them and I think they enjoy a bit of down time too. All the snow clubs with Esprit I've seen always get the kids out playing in the snow, so they're not cooped up all the time.
HTH.
We're off the Plan Peisey on 12 March - see anyone else there???