I'm trying to book a 1st class RTW and go through Hawaii as I travel Westwards.

However there never seems to be availability in 'A' inventory on any flights to HNL or KOA despite there being a ton of empty seats in those cabins.

Do you think I should just waitlist a day - do their inventory systems have a habit of clearing waitlisted RTW requests within a few days if the loading in that class is low?