DW and I registered yesterday for the 2014 Half. Our anniversary is in August and next year will be 15 years for us. We talked about possibly running the Disneyland 1/2 in 2014 and completing the Coast 2 Coast Challenge. I remember seeing where it asked us if we were doing that on the registration for the WDW Half, but I didn't check yes. Is it really a big deal to go back later and add that or can I just check yes when I register us for the Disneyland 1/2 if we decide we are going to do it?