Pros: free coffee/drinks machine
Cons: only 3 types of shifts, some "types" of customers
A day or morning shift is catering to customers, maintaining upkeep of the store, checking all the gas pumps, and restocking what's needed. In the night shift, there's more cleaning to do, but less customers.
You learn to work a cash register, make coffee, and (when the manager is away) take calls for fuel readings, restock merchandise (happens a lot with tobacco products), and solve problems that customers might have with the pumps (usually they're sliding cards the wrong side). You get occasional paid training sessions (30 mins long) and do monthly online safety reviews.
The management is fair, but the way shifts work is sometimes not. There are only three shifts: morning, noon, and night, each of them eight hours. It goes by seniority so sometimes you end up with the noon shifts no one wants and spend the entire day working, then too tired to do anything afterwards. Once you wake up, it's work time again.
Hardest part of the job isn't the job itself; it's the customers. But it's a customer service job, so there's not much that can be done.
The most enjoyable part of the job is, ironically, the people. Some regulars start to know you by name and can be really nice.