What are the best ways to lose weight in 3 weeks?

Karatequeen
I'm planning on going to Hawaii in 3 weeks and the thought of working out just crossed my mind. I would like to lose as much weight as possible and I know that I need to do weights with cardio and a healthy diet.

what are the best strengthening and cardio workouts to lose weight the fastest?

how much weight have you lost in 3 weeks or a month?

P.S. I weigh about 180lbs and am 5'6"
What are the best ways to lose weight in 3 weeks?
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