More and more, people are now renting out houses. A bunch normally does the Long Beach show and makes a short vacation out of it staying in a house (somewhere close I think) to the beach. Don't know how much is cost, but I'm sure the people staying split it and have separate rooms.
I have stayed in someones apartment for a week at $1500.00 with 5 other people during the San Diego CominCon overlooking one of the more popular near by streets and it was like Mardi Gras at night.
Another friend of mine gets a VERY nice house for ComiCon but pays $5000 for it for 2 wks. He brings in his whole family, brothers, cousins, Mom employees etc.
Check the internet and local area to Long beach for short term/event house rentals. Many of you could get together and stay for a week.
Here's one. Nightly for $200.00 or weekly for $1500.00 3 Bedroom sleeps 6 (or more). No charge for additional people.
https://www.airbnb.com/rooms/3561421?s=S9Tc