Compared to other areas in the northeast, Bemus Point is very friendly, and I'm sure that there are lots of friendly people in the church. But probably you'll find that grocery store clerks, fast food employees, etc are less friendly than what you're used to.
There is a LOT of snow in Bemus Point. Each winter you will probably have several times when you get a foot or more of snow within the space of a day or so. Most of the winter there will be snow on the ground. The first snow usually happens in October sometime, although it doesn't usually start staying until late in November. The last snow is usually in April, but April snow doesn't stay around either. The highways get cleared very quickly. You will not need an all wheel drive vehicle unless you live on a dirt road or at the top of a hill or something like that. If you live in a village with sidewalks, you will need to shovel your sidewalks. Often people will hire someone to plow their driveway if it is long. If it's short then you'll need to shovel that. (Or you could get a snow blower, many people have those.) If you're living in a parsonage then the chuch will likely hire someone to plow your driveway (especially if it is shared with the church).
You'll all need warm coats, mittens/gloves, hats, scarves, and snow boots. The children will also need snow pants.
You will not need air conditioning in your house in the summer. There are places very nearby where you can go skiing. You're very close to Chautauqua Lake, so in the summer that's swimming, boating, etc, and in the winter is ice fishing if you're so inclined.
If you have other questions please let me know!