Girls, do you think it's possible to go to the sea with a two-month-ol…

Girls, do you think it's possible to go to the sea with a two-month-old baby? I really want to, we're already planning tickets, but my mother-in-law is driving me crazy, I have such bad relations with her, she always decides everything for me, raises her voice. Yesterday, she decided that I wouldn't go anywhere and it's not up for discussion, I say this is my child and I am his mother, and you're nobody to decide for me. Even my parents don't decide anything for me, they just advise, but they say you should decide yourself.