Hey SAHS - thanks for the low-down highlighting that the format of the 'Special Conventions' has remained the same over the last few years as per the letter to those wishing to be a delegate:
APPLICANT INSTRUCTIONS: 2017 Special Conventions: CONVENTION ARRANGEMENTS: The emphasis will be for the delegates to benefit, not only from the spiritual association during the three-day convention, but also to spend three additional days with the local brothers before or after the convention so that there may be “an interchange of encouragement by one another’s faith.” (Rom. 1:12) Hence, this would be a span of seven nights in the convention city. While in the convention city, the days immediately before or after the convention should not be arranged by a travel agency. Instead, the host branch office will create an itinerary for the delegate after receiving his activity preferences (for example, field service, attending gatherings with the local brothers, and visiting places of local interest together).
And also as per the publicly accessible official Special Convention website:
Locations > Canada > Are You Interested?
Convention Arrangements: You will benefit, not only from the spiritual association during the three-day convention, but also by spending three additional days with the local brothers either before or after the convention so that there may be “an interchange of encouragement by one another’s faith.” (Rom 1:12)
The host branch office will create an itinerary for your group based on your activity preferences. This will include field service, attending a gathering with local brothers and possibly visiting places of local interest.
Generally there is one evening of entertainment provided to delegates - with selected locals providing the entertainment.
Also for one day a local congregation will host a group of delegates - in the morning they'll be greeted at the local KH, then spend the morning on the ministry (getting to see BEHIND the tourist bright lights and allow them to get a feel for the local area) - they'll then enjoy lunch all together and have an afternoon for entertainment and chat/socialising, before the delegates return to their hotel in time for dinner.
In addition the delegates can go on a number of 'tourist-style' sightseeing trips conducted by local brothers and sisters who have all been trained.
Below is an example giving a feel for the whole experience, not just the entertainment, but also the welcome greetings etc etc - there are hundreds of similar videos on youtube