December 2016
Usually a rejected/dismissed quest bubble (clicking "nope" or "no thanks" button) will permanently disappear and a new one will instantly pop up no matter how many quests you've rejected. However, those quest bubbles (holiday special and normal) are not popping up anymore after getting arctic hotel, ice hockey arena, and sledding park from holiday special quests. Other kinds are still popping up such as trade deal, epic project, and video ad bubbles, just not quests. Am I the only one facing this situation?
December 2016
it seems that the quest bubbles have finally appeared the next day. i think there's a certain limited number of quests available in a week (not sure how many exactly) and once you've done all of them, you have to wait till next week for new quests to reappear.