Can't say for certain, but I think the stores open at 10:00. As far as getting there, it would be a very long walk. Disney transportation however will take you from the Dolphin to Downtown, or anywhere else on property you want to go. Just catch a bus! From the hotels they have buses to all the major parks (Theme and water) and buses to all the hotels etc can be transfered to from Downtown Disney. It is also possible to use the parks as transfer points to other hotels. IE take the bus from your hotel to MK and then take the bus to Wilderness Lodge.