Stade Pierre Mauroy is modern (opened in 2012). There’s plenty of eating and drinking places outside, a RWC shop, entertainment and toilets. There was some queuing to get in, some zones seemed to be much worse than others. If you need the toilet, go before you leave. Once out, the stewards were very fierce about letting anyone back in. Inside you’ll find plenty of bars and some food options.
https://www.rugbyworldcup.com/2023/venues/stade-pierre-mauroy