As Airtours has changed it's name to MyTravel, perhaps they should now be referred to as the Travellers rather than the Tourists - I will let my coarser colleagues run with that one!
The RHS thing I believe is to cover the actual, but not admitted, pilot shortage at MYT and increase the standby availability. The CRM implications of flying a Capt in the RHS who can't touch anything need looking at, I wouldn't particularly want to do it.