Heading out to Morzine with the family for the 1st time in July. Any bike hire firms to use/avoid? I will need a 20′ wheeler for my daughter as well as a small/x small 26′ wheel for my son.

These seem decent blokes:

http://www.toricomorzine.com/

We used a place just down from the Super Morzine bubble last summer – I can’t remember their name but it’s run by a Brit couple who were really helpful.
140mm travel GTs were @40 Euros a day which was a lot cheaper than the other places, the bikes were kept in good condition and I think they had kids bikes as well. Torico were good if you want bigger bikes but I think they were @80 Euros a day