You are getting some answers which seem to be pointing to no extractions and no HBOT. And these answers are coming from the doctors that you trust. How long is the cruise you are planning on going? If it's just a week or two, maybe you could just go and deal with the nagging issues when you return since there doesn't seem to be anything you can do on the horizon other than daily oral hygiene work.

Gloria
She stood in the storm, and when the wind did not blow her way, she adjusted her sails... Elizabeth Edwards

Wife to John,dx 10/2012, BOT, HPV+, T3N2MO, RAD 70 gy,Cisplatinx2 , PEG in Dec 6, 2012, dx dvt in both legs after second chemo session, Apr 03/13 NED, July 2013 met to lungs, Phase 1 immunotherapy trial Jan 18/14 to July/14. Taxol/carboplatin July/14. Esophagus re-opened Oct 14. PEG out April 8, 2015. Phase 2 trial of Selinexor April to July 2015. At peace Jan 15, 2016.