Grimsby Daylife/Nightlife

Hi all, one of my mates 40th birthday next weekend and we are going to Grimsby for the weekend (12 of us), just wondering generally speaking, what’s the daylife/nightlife like for pubs/bars in the area? We are staying in the centre so I take it plenty of pubs and stuff? I’ve heard about Cleethorpes but the reason we ended up in Grimsby is because we did the soccer Saturday challenge so don’t want to navigate away from there really. We have a costume for our friend to wear on the Saturday? Will this most likely be fine in most places? It’s not rude or anything.

Any replies, much appreciated!