That are the various options (and costs) of going from a Disney hotel to a day at Universal or Sea World? We are flying in and using ME to get to our Disney hotel.
I have gone to both while staying at WDW with no car. For SeaWorld, we got to the TTC. Then, we took the Lynx bus to SW. It is about $1.50, per person, each way. You need to tell the bus driver you wish to get off at the SeaWorld parking lot. Then, you just cross the parking lot and you are at the front gates. Reverse it to get back to WDW. The Lynx website will give you a schedule....www.golynx.com
For Universal, we hired a towncar service to take us. There were four of us, so it made sense to use the towncar service and paid about $60, rather than a taxi. The towncar dropped us right outside the main entry way (stairways) to the parks.