sdcc 2027

hi all
i'm looking at getting badges/entry/tickets/whatevertheyrecalled to get into sdcc next year as i want to be at the percy jackson panel (they do one every year).
i've made my member id but how does it all work if i also want to bring my sister?
does she need a member id? when do tickets for next years comic con go on sale? Any rough estimates of prices? will i have to do any overnight queueing at the convention?
i've already asked google and checked the sdcc website but would like some responses from people who are quite knowledgeable in the topic already :)