Mrs. Kermit Roosevelt hands over the keys to her home to house injured sailors during World War II

The transcript features expressions of gratitude and acknowledgment. Mrs. Roosevelt is thanked on behalf of the merchant marine seamen, and Rosemary is welcomed. The speaker expresses happiness about being present and acknowledges the importance of the occasion.

What does the speaker mean by 'I give you the keys of more hannis'?

What does the speaker imply by saying 'I'm very happy to be here'?