Either one is good ... but can you do just one of them? I think groups of adults or families with older kids probably don't have many of these kinds of photos. (And me...)
These are good ideas. Yes DL does have a railroad -- Casey's Train I think. I love love love the souven"ears" I am determined to make my kids wear them this time ...the youngest likes hats, the older 2 I can bribe or threaten...whatever works.
Disney way: Souvenears. Maybe bold out the Ears part or if you do a double letter with a shadow alternate the color say red on the bottom for Souven and red on the top for Ears.