Good afternoon
We checked the situation of your tour:
-several sights were closed due to strong winds and safety reasons, which resulted in a shorter walk around
-your son had some breathing problems due to the altitue which resulted, that the tourguide adopted the walk around
-the tourguide extended the tour for the Lindt chocolate shop for your kids - you do not mention these aspect
-you asked the tourguide on the whole return travel about Zermatt and you get a proper itinary on a sheet of paper what to do in Zermatt
There is no mention about to pay for the tourguide's meal. You wanted to pay for his meal (he was asking you twice if you really want to pay for it). The product description says: gratuities welcome for the tourguide. There is no obligation!
When looking at the facts, this rating is based on your personal problems.
Kind regards
Mike / Swisstravelguide.ch