Hey AugustHog,
Yup, it is a hobby. One gets outside, meets people, is an emissary for all detectorist(make proper plugs, fill all holes, deal with others honestly and openly), smile at the little kids, return important things when you can find the owner and give your family a nice hug when you get back and share with them your life and share theirs with them.
I've been on and off of it for many years. Back in the 70's I borrowed a fellas White 6000D that he was not using and wow what a difference to have a real detector. Found silver coins, tons of pennies, learned to find nickles and gold rings, found a gold tooth (oh how nice a pinpointer would have been for that target!!!), returned a little girls lost necklace (that was a memorable moment as it was just so good to see that little girl smile when the necklace was found) and then I've made friends on the MD sites and it gives me a place to share some of my stuff.
What brand is the shovel?
Attached is a picture of some of my prospecting finds on top of a 43 half dollar I was given.
Those beaches could be interesting, are you familiar with how to use your machine on wet or dry salty sand? Might want to ask about that before you go.
Have fun, be safe, stay happy! Have a joyus Christmas with family & friends 63bkpkr