There are bar waiters everywhere, and I find, if you take care of them, you won’t go thirsty. On our last cruise, we were standing in line at a busy bar and a couple jumped in front of us. Our bar server came over, took care of us and we had drinks before the clueless line jumpers.
In February, there will be more kids than Princess but not as many as in June or March. Camp Ocean is great for kids. Gives them activities and friends, and you get free time.
There will be lines for buffets and some things, but not too bad. My advice, go with the flow and enjoy.