Frodo and Sam are unavailable and must be replaced by two Disney Princesses. Which ones hold the distance both physically and mentally and throw the Ring at Mount Doom?
Frodo and Sam left the Shire in panic at the arrival of Gandalf and the latter must replace the Hobbits by Disney Princesses (including Elsa and Anna even if they are technically not bona fide Disney Princesses). There is no one else. The rest of the Fellowship is unchanged, including Pippin and Merry who refuse to replace the two leads.
The Disney Princesses have the capability of the end of their cycle. They’re immune neither to the corrupting power of the Ring nor to a good old stab in the guts (beyond the general luck of Disney heroes).
Who should replace Frodo? Who should replace Sam? The objective is to throw the Ring at Mount Doon, whatever the cost.
Bonus question: Sauron can corrupt a Disney sidekick to replace Gollum. Which one brings the ring back to him?