We visited the St. James Irish Tavern on a Wednesday evening just around midnight for a last few drinks with a local friend. They have several Irish, Swiss and international beers on offer, some of them on tap.
As in most foreign Irish Pubs the Irish beers are more expensive than the local beers.
The interior consists of a large curved bar and some wooden tables. They even have a discotheque downstairs.
Sion has invested a couple of millions in a fantastic sound and light show which is free of charge. It starts at the City Hall (Hôtel de Ville). You can just show up, no need of prebooking. Best is to check with the tourist office about the exact dates and times.
So, at the starting time small round lights start to appear in the small street to the left of the City Hall. You just follow the lights and you see different buildings illuminated. This is a stage by stage thing and it takes you up to the area behind the parking underneath the Valère castle. There the real sound and light show starts illuminating the Valère castle and the ruins of Tourbillon castle. The only draw back is that the story is told in French only but still it's worth going. If you want to take pictures I recommend you take a tripod with you, otherwise you get wobbly pictures like me.