The carry-on limits are posted on the site. Still we were a little worried but there were no problems. We each took a carry-on and a personal bag on for free. A note that my same carry-on was too big for Air China so Norwegian had decent limits.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .