Just in case of what, Mr Red?

Tom, Irish Music magazine lists some Belfast sessions - click here or you could try the prof's pages which also have quite a few entries for Belfast. Not all the venues are just Irish traditional. But being mostly in England now, I'm losing touch with which are which. Certainly Kelly's, the Kitchen and the Rotterdam for instance, used to cater for more general folk. (Come to think of it, I'm not sure the Rotterdam survived urban renewal in that part of Belfast). Fealty's (Bangor), which you will see listed for Friday evening Irish traditional sessions, has a more general folk session on Saturday nights, 9pm-ish till around 1am.

If you search using keywords like Irish" and "Belfast" and maybe "sessions" you will find some other useful threads on this topic, and you will see the names of mudcatters who have better info than me. You could send them personal messages if they don't drop by here. Annraoi is one name that comes immediately to mind, and I'm sure he'd be pleased to help.