So, how do you receive tips? Do people just reach in their wallet and give you money, or they include it when they are paying for the drinks? Can someone explain to me how all that tips stuff is going/happening?
Thanx for your reply guys, really helpful. This IS my first professional gig as a magician, but I have worked with people in the past. I am a basketball coach, so working with people was my job.
I am also skilled magician (with sleights), and have been performing for strangers in the past. I was also thinking about 50 per night + tips. But, again, can please someone explain to me how the tips work?
Also, one more question. This Coffee place has like a bench, with 5 tables. So there will be like 5 different groups of people sitting together. How do I perform then? One table at a time (even thou they are like a feet away), or maybe 2-3 at a time? How would you handle this situation?
Thanx again
Well for the most part, it's the customer's will and conviction whether or not they want to tip you. There are some steps you can take to put the idea of tipping in the customer's mind by utilizing a few money related effects, such as a bill change like the classic One Hundred Dollar Bill switch or Extreme Burn; On the Real Secerts of Magic DVD, David Stone has a wonderful effect on there where he tears a piece of napkin that he borrows from a spectator and changes it into a twenty and pockets it.
As far as performing for different groups that are that close together, I would still perform I one group at a time, but using my body kind of like a screen to prevent other groups to see exactly what i'm doing. They will still be able to see and hear the reactions from the people that you are performing for and make them think, "Hey, they're having fun, I want to have fun too...

BRING IT ON!!!"
It's been a couple of years since I have done any walk-around for profit, but eventually I want to pursue restaurant work. My biggest piece of advice to you is invest in business cards. Whenever you perform for a group, if you make a connection with them and they like you; break them off with a business card. When I was doing walk-around, I thought at the time that would be my only gig for awhile, but thanks to my business cards I landed some birthday parties, a couple more walk-around gigs, and my clients were happy also because what I think would happen alot of times is somebody that I would give a business card to would take it back to work with him and in turn promote me and the place where I was working, by talking about the magic they saw.
Lots of food for thought here and i'm sorry for going on and on, but at any rate I wish you luck with your future endeavors.
Sincerely,
David