Was a very simple cashier job, nothing special or too crazy. Gained more experience with cash registers, handling money, dealing with customers. Had to keep my work environment organized which is something I always succeed in.
Would not recommend working for PJT as an assistant. If you are looking for a temporary admin position, maybe. Currently most assistants support and average of 5 people. Paid as if supporting 1 person. Bonuses and raise are not guaranteed.