So many RFPs that we receive have nothing to do with the real audiovisual needs of their meeting or event. Sometimes we've received the exact equipment specificatons from a previous year in an entirely different venue of a different size and shape. There is a very wide variety of formats, ranging from specific with minute details to vague and open ended. As with most things, somewhere in between is the best way to go: though you should lean significantly more toward specific. Read more about this in an excellent article from the folks at The Writing Works. The article explains this very well altough I would love to engage in additonal dialoguee.