I am on the fence!

Mainly because I don't know how many of me there are. My grandma
may come along for a few days. Then I started thinking that maybe I could bring my niece with us. (Even funnier is that somewhere in there I thought "well Connor would be free for the most part so maybe I should just bring both of them." Um, hello, Tia! What was my brain thinking
honestly contemplating bring
THREE kids under four
by myself. Some days I just don't know what I am thinking.)
Is the cruise filling up? If I booked would I be able to book 3-4 spots and cancel 1-2 of them later if needed? You said there was a way to pay at 45 days out right?