Has anyone had underarm laser hair removal?

Since it is summer, I often wear sleeveless or short-sleeved tops, but shaving every time is too much of a hassle, and I am also bothered by the prickly hair that grows back after shaving, so I am considering laser hair removal.

Since it's my first time getting this procedure, I have so many questions.

Usually, how many sessions do I need to see a noticeable reduction in hair?

I am wondering if the pain during laser hair removal is tolerable, and since my skin tends to be sensitive, whether irritation or redness lasts a long time.

I would like to know if I just need to shave before the procedure, and when I can shower, exercise, and use deodorant after the procedure.

Please let me know if it is better to receive a package, and if you have any tips on how to choose a highly satisfying option.

We would appreciate honest reviews, pros, cons, and satisfaction levels from women who have actually received laser hair removal.