i would guess that they want copies of receipts showing that you purchased enough RU to cover enough corresponding ground for the RR seeds.

i bought a gallon jug of surfactant 2-3 years ago, 12 bucks. it only takes a few ounces per acre. dawn would probably work just as well. adding ammonium sulphate is also mentioned in the generic label. it comes in little crystals that i pour into a cup, then fill with hot water. i pour this cup back and forth into another cup until it's dissolved. then i pour it through a mesh strainer into the tank. the mesh catches some gravel and what looks like little pieces of dead grass...stuff that can mess up a nozzle or a pump. it's a pita. so i dissolved magnesium sulfate (epsom salt) in water and added household ammonia water. that seems to work just as well.

doing this may make the vegetation burn down another day or three sooner than if you didn't add the surfactant and adjuvants, or it may not. i've never done a side by side test.