Ocean Aura

it's not going to be easier cause i got MLP items around the house

Well, in my opinion, they can either accept you for who you are or... this might get ugly. At least that's the way I picture it for myself.

Your an adult, they can't stop you from going to the conventions. 84% of fans are male, and the average age is about twenty years old. If you explain the facts to them, and maybe show them the battle against Tirek, they might understand better.