Hi,
By populating the form at originalresorts[OR], I assume you want the data to be submitted to RS from the lifestylercruising[LC].
So,
When a user submits form at [LC], the data is saved at [LC] mysql database, email is sent to [LC] admin and also the [OR] form is populated.
Now, the problem is, how the [OR] form is populated and WHERE?
Do you want the user to be redirected to the [OR] form where he/she can fill rest of the details and move forward?
What happens when the user fills form at [LC], submits it but there is no room available on [OR] for selected date range? Do you still want emails to be generated and redirect user to the [OR] where the user can change details and process order?
OR
You want user to stay on [LC] while the actual order is placed on [OR] in the back-end and user is never redirected to [OR].
I have good experience in both ASP and PHP. However, we don't have to use ASP in this case as all coding will be in [LC] which is PHP(Joomla).
Looking Forward...