Pros
You get paid pretty quickly and get your expenses on time as long as you fill your sales info within a day. Pay is standard rate of what BA's get paid. Some places I've worked pay less, some pay more. You pretty much know your schedule for the entire contract. A few times it was switched up on me, but I was always asked first.
Cons
It's a bit ridiculous that some shifts have supplies and some don't. It's one thing to purchase ice and food prior to a sampling shift but to have to purchase all the other things that are required to have on the table is ridiculous. Shifts that do have the supplies, you only get the box once. If you've worked that brand, you don't get another one and are expected to keep all the posters and cards neat and tidy (and in a few cases print signs off at home) but have to go out and buy everything yourself. You work with so many different brands and end up with a trunk full of junk that you can't get rid of. I'm not getting paid to be a storage space. If you're working at the grocery store you have to purchase the actual product being sampled too. I get it, grocery stores are different from the beer stores and lcbo's but to ask your employee to spend over half of what they're earning on supplies upfront is ridiculous. I did this with another company and they gave me a card that was loaded to pay for these things. You're expected to put together these amazingly perfect displays for a bunch of photos you need to submit (like any other BA gig - totally acceptable), but you're only allocated 15 minutes to do so and that set up time and 15 minute clean up time is unpaid. If the store is busy, you're spending a lot longer on both.. but not paid for your time at all.