How to play Boomerang correctly

About Boomerang: Europe, from BoardGameGeek:

Boomerang: Europe, like its sister games Boomerang: Australia and Boomerang: USA is a "draft-and-write" game. It features a unique blend of set collection and card drafting with the approachable feel of a roll-and-write game. Draft locations from across the European continent as you collect sets of activities and try delicious food to gain the most points. Boomerang: Europe is a stand-alone game in the Boomerang family that plays similarly to the original Boomerang, but has some rules differences and new ways to score. -description from the publisher