Just for reference, here's what my 16 y/o daughter who is applying for an RN two year sixth form scholarship with an FAA add-on has been offered pre-AIB:
3 days at sea in
HMS Albion (Liverpool -> Plymouth) - not a proper flying platform, but the Ark Royal offer clashed with exams.
Potential officer acquaint course (POAC) at RNAS Yeovilton - 4 days
Place on an SCC SNCO leadership camp at BRNC - a week in late July (despite the fact that she's in the ATC already..). Department of Naval Recruiting has about 30% of the places for 6th form scholarship applicants.
She's taking the lot, of course. For all of these she will be given return rail warrants, so there's no cost either. Make sure you badger your contact for what is available. I know some have had some really good ship visits for example.