There are plenty of blue runs to keep the novice satisfied in
Morillon of which Marvel is a loverly run through the trees unfortunately it was closed this year but with a good dump of snow it should open quite quickly.
There is also plenty of blues going down to La Carroz but if you decide to head
Flaine way then just be a tad wary of the ridge run which links Flaine Samoens and Morillon it is quite narrow with drops either side and can be busy and icy but it is fenced on either side and it really needs to be skied with short turns or a good old fashioned snow plough, there are also a couple of steep schusses where you will need to build up some speed to get up the other side.
I think the main thing is to get the family into ski school of which there is two ESF or Zigzag the other people in the chalet used the latter and they thought they were really good but my preference for Little W is the ESF.
If there is anything else I can help you with give me a shout :D