Albufeira Two Nights

You meet the guide at a fixed point and move through a run of bars across the evening, usually four or five, finishing at a club. The guide knows the doors, so you skip the queue and the group is not turned away for being too large. Most crawls include a welcome drink or a shot at each stop, and entry to the final venue. The rest is on you. Groups from several bookings are often merged, which some stags like and some do not, so ask whether yours is private. Dress code is the club's, not the guide's. No trainers and no sportswear at the last venue, and matching shirts get refused at some doors.

Each team gets a route, a set of clues and a list of photo or video challenges, either on paper or through an app. You work your way round the city centre, collecting points, and everyone meets at a pub at the end where the scores are read out. It runs two to three hours on foot and it covers a fair distance, though at your own pace. Most of the scoring comes from the challenges rather than the clues, so the daft teams tend to win. Comfortable shoes, a charged phone and a jacket. It goes ahead in the rain.