We will be at Universal staying at the portifino Oct.8-12.We went to HHN last year on a Friday and Saturday night.Friday night was not crowded but Sat.was very bad.So this year we are going on Friday and maybe go back Sunday.My ? is if we decide to go Sunday night can we buy our hhn tickets at the hotel or do we buy the stay and scream at the park that morning?We are buying our park tickets and Friday hhn online.