At my request, The Good Pub Guide is the standard Xmas present from my daughter. The introductory narrative is firstly read, then the local (Devon) section is scanned for any "Main" and "Lucky Dip" ins or outs, and then the previous year's Guide comes out of my car's "glove compartment" (to go into our home's bookcase with the previous incumbent going from there to the local charity shop) and the new one goes in.
At least once every year and often several times, I find myself away from "base" somewhere in the UK and where I need to be "fed and watered"; invariably the Guide points me in the right direction. Add to this the ability it gives me to book a table at short notice for a meal in a listed pub anywhere in my home locality, with a high degree of confidence that I will not be disappointed, and it more than earns its corn.
It is arrant nonsense to opine that the layout is somehow outdated or that there are too few year on year changes to warrant an annual purchase. Firstly, it is a guide pure and simple, not a fashion accessory. Secondly, there is always a proportion of changes and woe betide anyone using "last year's Guide" for, say, an important business or social reason, only to find that the pub has changed its management and is rapidly heading out of the "Premiership" as a result!!