Do you have any advice for potential travellers?
You really don't need to bring very much - I think the other reviews said this and it is true. There is an amazing amount of kit that you can borrow right down to thermos flasks, beanies and headtorches. If it gets wet, they just lend you more. So you can avoid the problem of wet kit and holiday laundry very easily. You can avoid cooking too - lunches are 11 euros for adults and 6 euros for children and very delicious. If you want to do your own lunches then you need to bring your food with you. Bringing snacks also makes sense, especially for smaller children.
If you are adventurous and confident, then be aware that there are only two trails that lead from the basecamp (one - the Little Bear Trail - a round trip of 12 km and the other - the Big Bear Trail - an 82 km route). As it was only light for 4 or so hours a day, we didn't stray far but if you can walk at sufficient speed you can just about snowshoe the Little Bear Trail whilst it is light.