How many seats can you legally squeeze into an A320? The most I can ever remember seeing was an 180 which brings it to just short of a 738. MON may have more than 180 in their 320's as they like to squeeze em in.
Don't forget that FR also fly to the Canaries now and has been said in the FR thread the bar makes a killing and there is hardly anything left coming back - which is where a lot of cash is made and will make a bucket & spade trip more lucrative than Mr Smith sitting in row 1 buying nowt on his way to a meeting.