Microsoft Bingo

Each of the ten destinations has a collection of 10 souvenirs that you can obtain. Obtaining all 10 souvenirs in a destination will complete a collection. You'll get a notification that the collection is complete, and each collection you complete increases the amount of tickets you get from auto-regeneration every 5 minutes by 1. The souvenirs are obtained randomly from inside luggage. I have no idea what the drop rate is, nor if bigger luggage types such as power bingos and travel patterns increase your chances. For me, I seemed to get all of my souvenirs from the standard luggage size. I have had games where I've opened 20-50 luggage all at once and didn't get a single souvenir, and then games where I've opened less than 5 luggage and gotten a souvenir. So the drop rate is very random.

In terms of maximizing your potential for souvenirs to pop up, obviously the more luggage you open, the more likely you are to find a souvenir in one. The "Around the Globe" achievement solution has a detailed strategy for leveling up that will ensure you are constantly opening luggage after every game. Using that strategy, I actually completed 5 of the 10 destination collections while working up to level 46. Refer to that achievement solution for more information.

These achievements require that you complete one and then three different collections in the game. Each of the ten locations have a collection of ten items that you can complete. These items are only obtained randomly in luggage that you open and appear at a very infrequent rate. To complete a collection, you need to play on that specific location and open as many luggage as possible until you get all ten items. After reaching Level 46, you should then return to the locations where you already have the most complete collections. Continue grinding the game until you complete the collection and then move on to another location.