£94? Wow, cheaper and cheaper! I fly from Farnborough these days on something even cheaper, but with better availability!
G-BRSJ is a nice ship (if that's what you've booked) - have whiled away a few hours in that one, including the D-Day celebrations over Plymouth Sound - I still have the pictures of the QE2 on the wall! Definately go and have a look at Burgh Island - where Agatha Christie wrote Ten Little

's, that's good from the air.
Rufus still flies from Plymouth, or at least did the last time I was down there, but only on the FI courses - bloody hell, you'd learn loads from him - including how to p*ss Exeter Radar off by taking up the wingtip hold above the radar head - ah, haven't propped up a bar so well since!
Late August in Devon - you should be OK for the weather!
Say hello to them all from me - Dave "Tidy" should do it (with Paul and Steve anyway!)