A lot of players that purchase our Fretlight guitars are new to guitars. They either haven't played in a long time or they are completely new. I wanted to give a brief explanation of how how the weather (humidity and temperature) can affect your Fretlight guitar - and really all guitars.
Do you remember when you were a kid and the wood doors in your house wouldn't close as soon as Spring came and the weather turned warmer? This is because temperature and humidity have an affect on wood. Believe or not, all wood, whether it's a guitar neck made out of Maple, or a 2' x 4' at Home Depot, absorbs and sheds water to some degree. That's right. Even after being cut and processed, wood is still somewhat alive until years later, when it becomes inert. Until that time, every year, during the natural cycles of spring/summer and fall/winter, wood will continue to shed and absorb water. Each year it will shed/absorb a little less. I have a 20 year old Squier Strat that plays perfectly well now and I really don't have to anything at this point in its life except for change strings. However, that wasn't the case when I first purchased it in 1986. Every year, religiously, I had to take it to a tech to have it adjusted. They adjusted the truss rod and filed any frets and then put on new strings. It played great again for another season.
The point of my story is that your Fretlight is no different. All guitars have a truss rod, including the Fretlight, so that the neck can be bowed back into a good playing position (very slight curve upwards when sighting from the bridge to the nut). Think of this set-up like an oil change. It's just something you need to do. A lot customers ask how often they should change strings. Certainly if you've taken your guitar to a tech to have adjusted and set up, have them change the strings. Otherwise, Change strings once a month. You can do that yourself.
So when you first get your Fretlight, it should play great out of the box. If you live in a high humidity locale, let it acclimatize for a few days. Remember, we're shipping your guitar from Nevada. High desert with little humidity. And even though we humidify our warehouse, once it hits the UPS truck, it's on its own until it gets to you.
Electric guitars are less susceptible than acoustics. We ship every acoustic with two humidifier paks to try to keep them humidified on their journey to you. You can, and should, keep your acoustic humidified when not playing it. You can always purchase more paks from us on the Fretlight Store. You need a new Pak when the one you have gets hard and dried out. That's it for now. Hope this was helpful.