Answer:
fans were so excited to see the final installment of the royal battleground trilogy that they
Step-by-step explanation:
This sentence can be transformed to have logical flow and conciseness by removing the full-stop and then substituting "hundreds of eager viewers" with "that they". It becomes a well-understandable sentence with great meaning. Hence the resultant sentence becomes: "Fans were very excited to see the final installment of the Royal Battleground trilogy that they lined up outside the movie theater days in advance."