Question about Short Run in Poker

[playtowin]

A friend and I were talking about a few of these scenarios - Mods, if this thread belongs somewhere else, please move.

Scenario 1 -

If you entered a 1000 person MTT, and YOU MUST win it ('someone was putting a gun to your head'), would you change to a different style of play? (for instance, pass up small EV edges)

Scenario 2 -
Would a person interested in making making money in the short run (playing MTTs)play differently than a person playing MTTs in the long run (playing for the rest of their life?)