Our trip to WDW will be the first time my DD(6) has flown.....And I guess Im paranoid about her getting air sick. She has been on long car trips and never gotten car sick.....Is there something that I can do to prevent her from getting air sick or something to relieve it if she is starting to feel queezy? Is Drammamine safe for a 6 yo?? Any help would be greatly appreciated...Thank ya 

and maybe take an extra change of clothes just in case. For what its worth, my boys usually get sick during landing on long(9hour) flights. 
your dd should be fine just let her sit by the window .I hear looking out the window will prevent car or air sickness.