Well now, this is interesting Damo. I did hunt around the site, and found the Wet and Wild ticket, and ticket combos. They are on a seperate page, with their own pricing structure again with the 1, 2, 3 or 4 day combo, either with hopping or not. Universal Theme parks are on a completely different page, with no mention of any other type of combo packages. NO whisper of Wet and Wild. No button. And absolutely NOTHING anywhere on the site that I could find, regarding the Orlando Flex ticket. NOTHING.
All tickets, including flex are on this page. If you try to purchase a ticket, you are directed there. https://www.universalorlando.com/Ticket-Store/PurchaseTickets.aspx?ParkTickets
And guess what, If I google "universal orlando theme park tickets" and hit the official UO link, I get brought directly to the theme park page, bypassing the wet and wild information completely.
Also, no where on the wet and wild page, could I find ANY reference to transportation from UO to wet and wild.
Worse, there was No reference to FREE transportation between these theme parks. And, having spent a few visits at Universal, I have never seen this advertised at the hotels, or given any type of transportation schedule, or any information given to me at the check in desk REGARDING this option. I have never even noticed a bus stop, or something that would twig me to think there was such a beast.
Complimentary scheduled transportation† to nearby Wet ‘n Wild® water park, SeaWorld®, and Aquatica™ ...https://www.universalorlando.com/Theme-Park-Tickets/Universal-Express.aspx