There are 61,000 pubs in the UK all of them different and all of them typical. If you know where to look, and what to look for, you can find your ideal pub. Some pubs take meal orders at the bar, others have separate food counters. However, drinks must almost always be purchased at the bar. To the natives, round-buying is sacred.
Pubs change according to the time of day.
The quiet, pretty town-centre 'tourist' pub you discovered at lunchtime may become a vibrant, crowded young people's pub at night. Pubs generally open until midnight in Scotland. Toilets in pubs are for the use of customers, not the general public. The pub, to many natives, is a second home - and some probably spend more time there than they do in their own homes. There are few restrictions on what you can talk about - pub etiquette is concerned with the form of your conversation, not the content.