although it's hard to comment without knowing specifics, based on my experience if you're questioning whether to apply disadvantaged it's basically just as effective to check "no" but then in essays and things talk about whatever made you unsure about applying, and then comment on why you dont actually feel disadvantaged e.g. "even though im poor im lucky my parents always stressed education" that way you leave the disadvantaged status to ppl who are unquestionably disadvantaged but you talk about the issue - if whoever looks at your app thinks your problem didnt make the cut to qualify you as disadvantaged, you dont lose any points, and if s/he does think you made the cut, you sort of win points for sucking it up rather than whining about it (so to speak, i dont think applying disadvantaged= whining). this was my strategy and a couple of my interviewers were like, wow you prob could have applied disadvantaged and i was like "heres why i didnt" and they were like "wow thats very mature" and i was like "sweet", so i recommend the tactic