With regards to the original question, they haver ordered 90 A380's and currently have the largest 77W fleet in the world which is just likely to expand even further.

With that kind of metal they need to expand in the current fashion. I believe they wont stop expanding until two criteria are met:

1. DXB becoming the busiest airport in the world, in terms of passengers
2. Emirates hitting the number 1 spot instead of the number 3 spot I think they currently have in terms of passenger movement.

All the other nitty gritty details are rather irrevalant to the customer.

LAS would make a perfect destination for Emirates as Dubai really wants to have that glamourous image that Las Vegas has with the hotels, night clubs, cars, money, plastic women, etc... Just not the gambling part

Thats my opinion