i am having trouble with level 31 the customers get impaitin waiting in…

i am having trouble with level 31 the customers get impaitin waiting in line. I don't have a podium to use. The get irritated with the cell phon adicts and the milk shakes take too long to make to keep them happy. I tried chaining but that dont seam to work what else can i try i am getting very frustrated. I already beat diner dash 1 and 2 they were both loads of fun thank for any help you can give me