Oh man, there’s no doubt in my mind that both Percy and Annabeth are going to make it out of BoO alive! Like I definitely think there might be moments where it seems as though they won’t, but Riordan is not a ‘kill your darlings’ kind of dude, and Heroes of Olympus isn’t a ‘kill your main characters’ kind of series.
Like I do think that Riordan addresses the weight of death, but it’s always done with side characters - Silena and Charlie for example. In Titan’s Curse, he introduced two characters specifically to kill them off rather than kill off anyone established. The characters in HoO that are in the most danger from death are ones that Riordan has been preparing us for the possibility of death since the beginning of the series - Frank, with his stick. Hazel, who is technically not supposed to be alive. I would have said Leo before HoH, but now his ass has to go save Calypso, and I doubt Riordan would detroy her deserved happy ending by killing off her LI.
HoO is a series that definitely hits you in the feelings, but it’s not a tear your heart out and stamp on it kind of series. Percy’s safe because he’s the main main character, and it would pretty much stamp on the established ‘dude can survived anything’ theme that’s been set up over both of the series’. The purpose of his creation was essentially to give kids with learning disabilities a hero they could see themselves in - that’s not a legacy you kill off for dramatic angst effect. Likewise, Annabeth is safe both because of her own longevity in the series and because of her connection to Percy - he’s not going to force Percy to live without her after he’s established how immensely important they are to each other, and he’s not going to kill her off for her own sake, after 9 books of people getting extremely attached to her. HoO is deep and emotional absolutely, but it’s not hardcore, any death could happen YA lit.
(Nico is also safe. Riordan knows better than to kill off a series’ one gay kid, or at least he should do.)
THIS TURNED INTO A WEIRDLY LONG META POST FOR ME JUST AGREEING WITH YOUR HYPOTHESIS HERE LMAO. But yes I’m totally with you on them living through it, and holy shit 17 days where did the time go????
Eta: OH SHIT romanitas JUST REMINDED ME THAT COACH HEDGE SHOULD BE ON RED ALERT. Y’ALL HAVE READ HARRY POTTER, YOU KNOW WHAT HAPPENS WHEN SOMEONE IS EXPECTING A KID.