You're an Evertonian mate, wear whatever shirt you want and stay true to what you believe. Be yourself, we're a very welcoming group. If you are planning on starting on the beers early, maybe drink around the lime street station area then it'll be easy to get a taxi to Goodison or even hop on the special match day bus. If you want to get served quickly for a few beers then I recommend the taxi club but you'll get a better atmosphere at the brick and 'the people's pub' (Wimslow Hotel). Decent food at the hot wok - often go for a prematch meal there, decent to eat in with a few beers too.