No soda! (sorry, we don't say pop where I'm from)
Bathroom breaks are acceptable.
BA check in with the manager and ask for a set up location. Your set up location will depend on two things:
A. The brand you are doing the demo for (They typically try to place you near where the product is sold)
B Your attitude/relationship with the store. ie Do you have your own products? Are you interrupting customers shopping experience being too aggressive? Are you not friendly? Do you clean up afterwards?
Stores typically don't provide you with a table or anything else except ice and sometimes they make you purchase that. The company ships you everything sans a table.
I used to do demo work before I started doing promo modeling and bartending for private parties.
I got started by a referral from someone who was doing a demo at wholefoods. I inquired and they gave me the company info. I also worked with marketing staffing agencies that placed me.
As an in store demo BA, I made between $18-$25 for non alcoholic products. For alcoholic I made between $30-$40. I did an elite private party one year for Halloween and made $50 per hour. It was a hire through the company I worked for. I met people who worked their as a direct hire who made more.
I'm fat now lol (all these food shops) so I haven't been booked in 9 months. It's a very vain industry but can be super fun. When i did in store demos, I always had so much of the products I was able to keep. I had enough Smarty Pains vitamins for almost a year.