Others have more experience. But here is what I can tell you. The apartment shop I completed was easy. I called the designated property, made my inquiry, and made an appointment. I reported on the phone call interaction. I visited the property as scheduled. I reported on that. There were questions about persons, exteriors, and interiors. This was not a video shop. I needed no specific skills beyond those usually used in mystery shopping. I remembered names, descriptions, places, conditions, etc. imho this was an extremely easy shop.
I have completed shops with and without test drives. I prefer not to do the test drives. They just add a few questions and more narrative to the report. Only if I were really in the market for a dealership vehicle would I take a test drive. The test drives add time, questions, and narrative for no additional pay. Oh, wait I said that already. But if you like vehicles, you might enjoy the test drives for personal reasons. That is completely up to you.
Nature does not hurry, yet everything is accomplished. - Lao-Tzu