I am a new Disney cruiser and need some help. I don't feel like I have done my uber planning on this cruise like I normally do our WDW vacations. I finally went online today and checked in. I had no idea that I could do it this soon so I have a port arrival time of 1:30 - 2:00. What does this mean? If we arrive earlier, do we have to wait to check in until that time? Does this mean we will not board until then? Totally confused and feeling very overwhelmed. Would appreciate any and all help.