When running a coffee place, which is more beneficial, having more customers who spend shorter times or the ones who spend more time in the cafe?

well what is important or beneficial for your business is if you have customers who spend money irrespective of how long they spend at your cafe.

Ideally, it would be best if you have a large turnover of customers who all spend money which means you have more volume and revenue coming in. If you have guests who come in and order and espresso and sit there for4 hours using your internet and taking up a table meant for more than1 person then NO..thats not good.

i think shorter time is more beneficial, 

- Some of the departments of customer service or hospitality the client at the time should not exceed30 seconds or3 minutes by domain or service provided

- For the management of cafes and cafeterias and fast food restaurants better for them rapid client in order to benefit his seat in another client service as well as increase profits

- A pioneering experiment in Japan in the field of ​​cafes and fast food where they make chairs for these places a way that is quite comfortable for the client so as not to consume more than allocated for the meal time or drink after eating and achieved great success and also succeeded in maintaining the times of work for institutions that give a quarter or a half-hour rest in the middle of the working day for the return of workers to perform their duties.