You can arrive whatever time you like but you will miss the first part of the AGM (Quelle Horreur! :lol: ). Not a problem, uless you are your club's delegate. Some clubs have a guest speaker first so the AGM often does not start until 10am.
I don't know what, if anything, is planned for Monday but usually it is for people to travel home (some of us have to travel a fair distance and catch ferries, planes etc). Sometimes it has been arranged to tour host members' homes to view their tanks. A lot of that sort of thing is often organised privately at conference, not planned beforehand.
Host clubs often do not offer timetables as they want the activities to be a surprise but usually Friday is time for everyone to meet and greet plus register and get their information packs (which tell you more about what to expect) and other goodies. Often raffles are run throughout the evening too. Saturday is usually reserved for the AGM itself and Sunday is for fun activities organised by the host club.
Having said all that, perhaps someone from the host club may be able to offer a little more specific info