My hip surgery was the first time I had had a spinal. I just took the anesthetist's recommendation since I hadn't had any ortho surgery. What they recommend has a lot to do with what procedure they are doing and how long it takes as I have found out with other surgeries. Any more anesthesiology can try to tailor anesthesia to the patient and their preferences. Gas always made me terribly nauseous so with my last general, it was all IV medication. Having said that, I loved the spinal and it would be the option I would take if I had the choice. I don't remember anything passed being wheeled into the OR until I woke up in the recovery room for the first time being without pain in a very long while.
It's normal to be nervous, anxious, scared or all of the above. You are placing a lot of trust in your medical team, which, let's be honest, you've basically just met! LOL. These are professionals who only want the best for you. Once in pre-op, I think you'll find that they'll start to put you more at ease. If not, let them know and they will find a way to help you to do that. I have every confidence that you will do great and be so glad you kept your surgery date. Best wishes for a smooth surgery and a good start to the healing side of your journey.