i'm trying to get ready for our jan. trip...i bought a disney note pad filled w/ thin, white paper & i have a fat, Disney ball-point pen. can this work as an autograph book & pen OR do i need thicker paper & a sharpie marker? if i should buy a Disney autograph book, can i get one at POP or do i have to wait until i go to the parks - are there any sold in local stores, i.e. Walmart? thanks.