Hi Jessebritches,
Welcome to the forum.
Your concerns are valid, and if you were to get into an accident while driving a car using a contract ID to which you were not entitled to receive the LDW coverage, you would be liable for any damages.
You have a few options:
1) Take the risk and go with the free LDW coverage.
2) Book using a different code, and either use coverage from your personal insurance or through a major credit card.
I should probably add this to the FAQ index.