Me and my husband always give tip to these people coz we know a lot of people who's got jobs like these and only get 600 to 1000 riyals and most of them send all their salary to their family...trust me i know, i used to be one of them. So by just recieving a tip from us is really a big deal for them. Even if you just give 10 riyals they'll be very thankful for that.....