Other than leveling up to a higher level and getting 6 pearls or maybe more at higher levels, is there a dedicated way in which you are more likely to get pearls during game events?
Players receive Pearls only with every new experience level they reach in the game. The number of Pearls received graduates with each stage of level-up:
You get 2 pearls for every mission advancer on your prizes.
Its been awhile but last I remember you only get 12 of these a day. So if you can keep up with the lh you can easily get 24 pearls a day. but again key is to keep doing your highest level prize repeatedly.