Dorothy, just a couple to add, but theme and variation only. I check to make sure the shutter is closed by using a cable release to "take" the picture after composing. A dry run, as it were, before the film gets anywhere near the camera is my best way of checking the shutter, aperture and basic shot. This has saved me some film and anxiety. Once the film goes in the camera, you have everything set and just have to pull the slide, shoot and put it back in.
How will you meter? If you've been using a 35mm slr, by all means, take it with you as it is familiar and won't be a distraction from the Crown. If hubby has a spot meter, it might take a bit of getting used to as, the first time I used mine, it was just confusing. Added another layer to the already "mass confusion" I was dealing with, but your brain may be better organized than mine.
I use a 4" x 5" framing device (a mat board will work with a string or stick attached for the focal length) which matches your lens is a simple tool and worth the effort. Look at the image without using the camera at all, just a simple "window" works well to see the scene first. If it is what you want, set up and shoot.
Have fun! You will love your first sheet of film.