I believe the author is reffering to some holyday. By 'think big' the author is encouraging us to dream and not be afraid to speak up. by the second phrase, there is for sure a motivational message, inspiring us to work in teams. 3. means that you can be extremely happy if you take souvenirs from beautiful places u've been to.
and with the last sentence, the author says that if yo enjoy yourself and have fun, its for sure that your holiday will be a blast!
