The Unpredictable cost of transport

Intention:
Cheap night out with friends to see them off to Australia, where they are joining the Aussie navy
Train fare £4.50 return
Use Lympstone Commando Station (where if you arent on the list you get chased off by a man with a gun)
Night out at Lympstone Barracks
£4 a night each for a room
£1.05 for a glass of wine, £1.55 for a pint of lager
Return on the train in the morning using return ticket
Total cost approx £32 for night out

Actual:
Train to Lympstone cancelled at Exeter without explanation £18 for taxi.
Evening goes to plan. The accommodation really IS that cheap and so are the drinks. Goodbyes said, new friends made.

Sunday:
First train at Lympstone Commando not til late in morning, we catch a bus £5
From Exeter St Davids No train due to works, and replacement bus doesnt show.
Catch a cab with similarly encumbered traveller £35
Plus tips
Estimated cost £ 32 at start
Actual cost £105
egad!
How we love First Great Western trains