So from the page you linked to, this is what it says:
Face coverings must be worn in all indoor public places, and public transport, including taxis.
Despite it not being a legal requirement in the following settings, it is strongly advised that both employees and customers wear a face covering indoors. This advice applies unless they are exempt or actively eating, drinking or dancing:
- in hospitality settings such as pubs or nightclubs
- at a wedding, civil partnership or alternative wedding ceremony or reception
Some wedding or hospitality venues might ask you to wear a face covering. They can do this because they have looked at how to manage the risks for their business.
Mixed use venues: Where food or drink is consumed in part of a premises, like a department store cafe, or hotel restaurant, you must wear face coverings on the premises except in the area set aside for eating and drinking.
You are also legally required to wear a face covering in the auditorium of a theatre, cinema or concert hall and the viewing areas of an indoor arena or stadium when not actively eating or drinking.
Youāre correct though, it isnāt legally required in Wales but it is strongly advised.
In Northern Ireland and Scotland it is legally mandated except when seated. In Scotland at least you can remove them when actively dancing at a night club.