Verb conjugation of "determine" in English

Can we meet on the March 4 or 5 (Tuesday or Wednesday) in Cologne? I am delighted to see you again soon. We are in the beginning of March and we look forward to seeing you next week. Here's a photo.
Anyway, there are a lot of people on board and I no matter how high the waves may be, I always suffer from nausea or seasickness. I have not been on a small boat before. I will have to vomit.
What do you think of the current situation? Like you, I am writing letters, emails and other messages. Tomorrow I will leave, then I will go to my friend in Spain, where we are planing a beach vacation.