Hmm -
For 5 ppl a suite hotel is the best bet. The Embassy Suites property is on Paradise and is fairly new. Also off-strip is a newer AmeriSuites, which is just cati-corner to the Hard Rock Hotel and is also on Paradise. There is also a Residence Inn, also on Paradise, across the street from the Las Vegas Hilton.
You may want to try to book 2 adjoining rooms at a strip hotel. Easter weekend is not a busy weekend, and you should be able to get good rates. Most hotels charge an additional fee ($30 at the place I work) for the 3rd and 4th person in the room, so a $80 rate with 4 people in the room becomes a $140 rate!! Booking two $80 rooms would be $160, just $20 more.
Call the Luxor and ask if you can purchase the Blue Man Group tickets now. Some shows only sell tickets 30 & 60 days out; I would call & ask. The Luxor may even have packages that include show tickets. It's worth a phone call; just call 800 directory
assistance for their number or even look online. Every hotel in town has toll free numbers for everything. ( I saw the "Storm" show at Mandalay Bay back in July, and purchased the tickets 5 weeks prior & we had great seats)
For kids, here are some of things my kids like to do:
-Forum Shops at Caesars - FAO Schwartz store, Cheescake Factory restaurant
-Gameworks (huge arcade at Showcase Mall, on strip near MGM Grand)
-ESPN restaurant (@ NYNY)
-Adventuredome amusement park at Circus Circus (had 7th birthday party here with 19 friends!)
-Eiffel Tower elevator ride at Paris
-Shark Reef at Mandalay Bay
-Star Trek Experience at Las Vegas Hilton
-pirate show at Treasure Island
-volcano erupting at Mirage (only at night)
-car collection at Imperial Palace
-Madame Tussad's at Venetian
-NASCAR restaurant at the Sahara
-Fremont Street Experience light show downtown
Some of these activities can be $$$. The Shark Reef is $14 for adults; the Star Trek Experience is around $20; the Eiffel Tower attraction is $9, so it adds up. Other things are free, like the pirate show, volcano and the FSE. The ESPN restaurant acutally has a promotion with the Disney Club now; you can get a $40 game card for their arcade for $20 (believe this expires at end of Jan).
For your room reservation Look on the internet for wholesalers, such as Hotel Reservations Network (website is called hoteldiscounts.com or something like that), or Las Vegas Reservations System, which is a division of Expedia. Or look directly at hotel websites. Don't be surprised to see different rates for the same nights for the same hotel; hotels get rooms from many different sources. Hope this helps!
FYI - tried to PM this info; didn't know PM could only take 1000 characters. I apologize to anyone who wasn't expecting to see Las Vegas info on this
DCL site - JL