You can pickup all 6 at will call and only activate 4 while your there. The other 2 can be activated from your home on the internet. Or you can try and set it up to mail the other 2.
You can just pick up all 6 and they will activate the other 2 wjen they go for the 1st time.
They can do one of two things. First if you buy them online you will print the pass verification page that you will take with you to the park and then get your passes processed. Second and could possibly be tied to one in the right circumstance, if you buy you passes at the park they could process all of your cards when you are there.
Yes if you call and inform them of the situation you should be able to pick up the other four at the ticket office
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