One thing you may want to look into when you are booking a trip to Vegas is to see what type of discounts they offer to you as a member of a different group or organization. You may also want to look into the rate differences from weekday versus weekends. These are some things that will make a large difference in the overall cost of the vacation that you are planning to go on and enjoy. Make sure to see if there are any major offers or alternatives that are out there from competing hotels and see if the company you are with is willing to match or beat the current offer you have in front of you, or if you should simply spend the rest of the week next door.
There is no shame in shopping around and doing all that you cans o as to be able to find the best deal for you and your family.