I think it's time stand up and say that for practical business reasons if you want your tours and sites to be seen by real estate agents then forget about Flash, Java or QuickTime on any site or tour that you want real estate agents to see.
The simple reason is that iPads are rapidly taking over the computing niche that the laptop once held and Flash, Java and QuickTime don't work on iPads. iPads are rapidly taking over the mobile computing world. They are the perfect device for a real estate agent and agents are rapidly giving up their laptops for iPads. Many agents I know that didn't even have a laptop now have iPads. This is a fact of life so whether you like it or not get used to it. If you don't believe what I'm saying just look at HP, Dell and other companies who's business is built around the laptop. They are all on life support. An it's because of the iPad. Trust me, any business that doesn't pay attention to the iPad will also be on life support!
So as a business person that services the real estate industry you need to pay attention to all the slide shows, 360 tours and video tours your products use and make sure they can be seen and work well on the iPad otherwise you are going to look pretty foolish to your clients. I thought that the importance and significance of the iPad has been pretty obvious for a while but it's obviously not understood by all because I keep seeing lots of real estate photographers sites and tours that use Flash, Java and even 360s that use the old QuickTime player. Flash, Java and QuickTime was great technology in it's time but it's time is over.
Part of the problem is that if you don't have an iPad you may not realize what technology your 360s or slide shows are using. The other misunderstanding I run into when I point out to people their tour or website can't be seen on iPads is they don't understand what to use to fix the problem. Here are some products that are iPad compatible (this is not exhaustive):
If you are not sure about your website or tours you are using get down to your local Apple store or Best Buy and use their display demo iPads to look at your website or tour. Make sure your site and tours are working smoothly and the navigation works on an iPad and that the site fits on an iPad screen.