Oops. I meant to say I got my mom to let Scottie and I facetime while I was on vacation. lol
So yea, your puppy will be fine! Just make sure you let your family know about all the potential risks and be extra careful with the puppy (i.e. don't let him jump off furniture and break his little legs; make sure he doesn't run away if they take him out on a walk; don't give extra treats because it'll upset his tummy, stick to a strict schedule for feeding/potty etc...).
When you're back, he'll be SO happy to see you again. After giving you a TON of kisses, he'll forget that you left him at all.
But on that note, I have a friend who's dog would have a little pissy fit. He'd be mad at my friend for a day for leaving him.
But he'd get over it by the next day!