A Bad Hangover

Everybody has a different tolerance for what is acceptable to give away without a spoiler warning, so this will err on the side of caution and hide just about everything.

[show]Requirements
??

[show]Tasks
Deliver (7) taxi clients to Elmsfield
?

[show]Rewards
Stage 1 -- Civ reputation increase
Stage 2 -- ?
Stage 3 -- ?
Stage 4 -- ?
Stage 5 -- ?