In the direct-sales world, where I'm selling directly to the end client, reviews are much more than "pats on the back". They are money in the bank and those reviews put dates on my books. You might continue to argue that but, no offense intended, you aren't really in a position of authority there.
As for the relationships, I think you're spot-on and in the past year I've started offering a kick-back, referral fee, commission. It seems to be having some success but nothing earth-shattering. Like I said before, I think it's better to diversify my efforts in marketing. I've chased a couple of booking agents in this town but, so far, nothing to show for it. I think the agents in this town are heavily-leaning towards live acts and poo-poo DJs. I am landing some planners and venues and just this morning sent an email to a high-end planner, with whom I just landed a March, 2014 date (not thru the planner, just working it with her). She got the lighting and uses the big dog company. I offered her the package that she liked at our other event and I'm hoping I can use this event to wedge my way into their referral channel. They could put me in a whole new level of events.