The Explorer Tickets are not annual passes. Here's the definition I found: Enjoy 14 consecutive days of unlimited park to park access² to Universal Studios Florida™, Universal’s Islands of Adventure™, the all NEW Universal’s Volcano Bay™ water theme park, and select live entertainment venues of Universal CityWalk™. This ticket is not available at any park’s entrance. Ticket valid for arrivals from 1 June 2017.
We ended up putting a deposit down on the American Express package on the Universal Studios Orlando website. I am pleased with the package inclusions and price. I tried to get better prices buying the tickets and club room at RPR separately, but the package kept coming up less. The package also includes two rounds of Hollywood golf and the discount coupons for dining etc. I will keep checking prices closer to August and see if buying annual passes will give us a room discount but for now I'm satisfied.