Translation of únicamente

Spanish people are always saying, that you have to live the moment, you have to live now, since you do not know what is going to happen in the future. I think it is because many have troubles.
Nevertheless I think that we need to communicate. All in all, we will learn a lot from each other, mostly by writing, but speaking exercises are also really good for your Spanish skills. Is this OK?
We boarded the ship and it left the port. They started with lunch, which was pretty good. The ship sailed for about an hour until it reached the bay area, which had over one thousand islands.