Logistics of MDE when planning surprise trip

[DynamicDisney]

I am planning a surprise trip for our family in April 2015. I am also either chaperoning or tagging-along on my DD14's school trip in February 2015. I started making some "plans" in the itinerary section of MDE for our April trip, and it just dawned on me - my DD14 will be able to see those as planned when she enters MDE for our Feb trip, huh? We are not staying on property for the Feb trip, and not even sure now what our itinerary will be. I am just thinking that even if not able to make plans ahead for that Feb trip, we might want to be able to make FP+ selections the day-of, when we enter into the park for the day (no Park Hoppers).

Should I maybe create her a different MDE account to use for Feb? And then she can use the original MDE acct (from our 2013 trip), for our April 2015 trip? Does that make sense?