Toronto to Havanna on Lacsa is an excellent reward when compared to Cubanna, Air Transat or Canada 3000. I'll certainly take advantage of this reward even if it means a forced overnight stay in YYZ from USA( I wonder if this is possible due - do they follow the 4hour or 24 hour time restrictions for stopover - I would guess 24 hours as Canada is an International destination if travel originates in USA)