Translation of unverbindlich

We would love to have you here as our guests! My niece Katja had also many diffculties with the new surroundings. She is really upset with this new change. How was your trip to Italy? I'll keep writing to you!
Good luck with your studies in February, say hello to Nina and a kiss to Rose. Enjoy the great first moments..., they are all unique and unforgettable. Being mama fits you great! Happy for you.
Fortunately the bay we anchored was very calm and the ship did not move at all, or at least one could not feel it. We prepared for dinner and went to the deck, where everybody else was sitting.