What typically happens on a full-day walk?
People tend to gather about 15 minutes before the walk start time. This is a good opportunity to meet a few people and have a chat. The walk leader will do a head count and check attendee names against the bookings list, or, for walks where booking is not required, they will take a register either on paper or by using the Ramblers App on their mobile phone. The walk leader will welcome the group and provide a brief overview.
The group sets off as close to the start time as possible. There will usually be a break for lunch (bring your own food and drink) and a few short breaks along the way. Often there are no public toilets along the route so if you need a comfort-break you will have to find a suitably discreet spot. A back-marker may be appointed by the walk leader to make sure gates are closed behind the group and no one loses their way.
When the walk ends there is often a pub/tea shop nearby for walkers to enjoy refreshments if they wish before heading home.