Getting discounts booking 50+ people into Vegas Hotel

[bigweb]

My best Friend is getting married in Cesars Palace at the end of September next year. A large party of us are going over for a week (50+) him and his future Mrs are getting flight and hotel prices for us all to go over.

He is doing this through normal travel agents and being dealt with by their group teams.

I would have thought they would be climbing all over each other to get this business and giving massive discounts but this isnt what he is finding.
He can get pretty much the same price doing it as individuals.

The wedding is booked for Cesars but they would rather stay somewhere a little nicer and have been looking at the Encore or Wynn.
We are getting prices of around £1075 for hotel and flights per person based on 2 sharing each room.

Are they going about it the wrong way to get a deal?

Has anyone ever done this before or can point us in the right direction.

Edited by bigweb on Friday 11th November 13:19

[bigweb]

I've suggested that he calls the hotel direct and also calls Virgin direct for the flights as the high street travel agents as messing him about.

Ive just found the same package online for only £10 per person more expensive even if only booking 2 people on so he is getting nothing for bringing them £50K of business.