
For those who don't know what the network looks like, a map is here (apologies for the quality):
and a link to the Actv website is here:
http://www.actv.it
with a link to the PDF timetables (and a clearer map) here:
http://www.hellovenezia.com/jspvenezia/ ... oversi.pdf
For the limited number of 'roads' available to them, it is a staggeringly complex network, not helped by some services operating limited stop all the time or (usually) some of the time. Just because a stop is shown as being served by a particular line doesn't mean it is served all the time. A general summary of the lines is here:
http://europeforvisitors.com/venice/art ... _table.htm
I think if a challenge were to be attempted, then the Alilaguna lines, which serve the airport, should be excluded (as the Travelcards are not accepted), although the only stop actually affected is Marco Polo Airport itself. Also, line F to Fusina would be excluded for the same reason (privately operated). Other than that all the stops would need to be called at. To help, some of the landings are linked to the other side of the canal by Traghettos, which are communal gondolas. These do cost an extra €0.50 however.
Final complication - I bet most of you would finish at Lido Casino. This is because it only has one service a day in one direction, arriving at 0045. This would make for an interesting starting strategy - who would be brave enough to leave last? Punctuality is not brilliant, but not unheard of.
Something else to ponder over...