There isn't that much choice with the parks you wish to visit. You best option for price is as follows:


Disney 2 day Base 14 day expiry.
https://park-tickets.com/walt-disney...se-ticket.aspx

Unversal 2 park 14 day pass (assuming you want to do the new Harry Potter Ride, if not then a base ticket is cheaper)
https://park-tickets.com/universal-o...cket-2016.aspx
https://park-tickets.com/universal-o...se-ticket.aspx

Sea World and Busch Combo (if you just want 1 day in each we have on offer on the site that I dont think will last for long).
https://park-tickets.com/seaworld-bu...a-special.aspx

If you want waterparks ten look at the either the Disney waterpark funa and more ticket or the Sea World/Busch/Aquaita pass (good choice).
https://park-tickets.com/seaworld-bu...ial-offer.aspx
or thisone gives you 14 days unlimted access https://park-tickets.com/seaworld-bu...-aquatica.aspx

Disney - https://park-tickets.com/walt-disney...ay_expiry.aspx


You will not get these trough a UK agent as they are pretty much limited to try and sell you 14 days access to everything. We sell a far bigger range which can be tailored to want you need. Thie tickets above would work well as you can spread them over the 3 weeks.