Hi Capt
Ive spent a lot of time on Ipg websites as I have quite an interest in their Castaways project. They have a wealth of info on their Castaways Cove website but to see it you must login in from the main page first. If you don't have a password yet you can either send them an email or download their Join the IPG Form and email it back to them and they will send you a password very quickly.
I think you can also use a generic password that's in one of threads in this section to get in. Once you login check out all the different sections from the drop down menu in the airline section as it will pobably answer alot of your questions.
In the Purchase or Reserve a Villa page you could down load a mortgage app from one of the banks they use as well as lots of other docs. i hope you enjoy it as much as i did.