Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates

Question:

Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case.
(a) Cafeteria in your school
(b) Barbershop
(c) Hardware store
(d) Dentist’s office
(e) College class
(f) Movie theater