Please note that for every 10 person you will serve on the bar there are only 2 possible person that can give you a tip personally. Here in Qatar tips are not usually considered unless by the white peoples. But you need also to consider the company policy on tipping, for there are some which is centralized. But if you're expecting to received 100 riyals tip per day, I can say there's a big possibilities that you might not get it, besides, for sure you're not just the only one who's working there as a waiter.
Please note that for every 10 person you will serve on the bar there are only 2 possible person that can give you a tip personally. Here in Qatar tips are not usually considered unless by the white peoples. But you need also to consider the company policy on tipping, for there are some which is centralized. But if you're expecting to received 100 riyals tip per day, I can say there's a big possibilities that you might not get it, besides, for sure you're not just the only one who's working there as a waiter.