I've done several of these. Mintel is a great company and the instructions are pretty clear. You're given a photo of your target so you don't have to guess. This is their job, and the targets all know exactly what they're supposed to be doing. It's one where you get to catch people doing the right things. Because of the time it takes me to get there and park, the money is just so-so; however, I only take the ones whose trade shows are interesting. It makes for a fun day.
"Let me offer you my definition of social justice: I keep what I earn and you keep what you earn. Do you disagree? Well then tell me how much of what I earn belongs to you - and why?” ~Walter Williams