[Help] Going out of town for 5 days, not sure where to leave 10 month old GSD mix

Hi!

So my fiance and I are getting married later this year, and we will be out of town for a total of 5 days. We have a 10 month old GSD mix, who is friendly, housetrained, has mostly good manners, and can be left by herself for a few hours without issue, but has never been away from both of us for an extended period of time.

Normally, we would leave her with a friend or family member that she has played with before, but they will all be traveling with us. We've thought about boarding her at one of the reputable places nearby, but I don't want the pup the feel left behind.

Any tips or advice? Am I being overly worried? If we do decide to board our dog, what should we look for?

Thanks in advance for the help!