It depends on the station. Since we don't pump our own gas, there are a few different rules to the ones I do. What station are you referring to?
Sunoco, you don't need a pump photo, but I always take one anyway. You'll need an alternate photo. You pull over, park and check the restroom. You check the office or service bay by taking a quick walk by.
If it's an audit, like Exxon/Mobil, you have to get out of your car anyway to reveal yourself, and/or to check the restroom and do the audit. If there's a store, you park and buy something before the reveal.
Shell, you don't do the timing part, but need to evaluate both the gas attendant and the store cashier, if there is a store.
Hope that helps. Some are much easier to do than others.
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The more I learn about people...the more I like my dog..
Mark Twain