After the introductory surveys, most surveys are made available to users who meet certain conditions. The frequency of surveys can vary heavily by user since everyone has different shopping habits. For example, surveys are specifically triggered by purchasing an item of interest to our system, purchasing at certain retailers, or meeting a variety of other survey-dependent conditions.
However, consistently snapping your receipts is the best way to increase your chances of receiving surveys. So keep snapping those receipts and look out for bonus surveys that pop up.