Frederick wanted freedom for slaves and Captain Canot did not want freedom for the slaves. you should read the stories for more info, it's pretty important to read them
Situational irony is occurring as the character push the date of s.u.i.c.i.d.e to Valentine's day however due to their constant journey to finding purpose they keep pushing the date even further until the day they decide that they have way too much stuff to leave behind thereby quitting the idea of s.u.i.c.i.d.e.