Planning early is best, even if the Labor Day Weekend is a holiday when people leave for the weekend. Perhaps you could have the party for both you and your 1 yr old the weekend prior to Labor Day? That way no friends or family would miss the big event. Or if on that weekend, if you go camping, you could reserve space at a restaurant for family and friends for a late lunch or dinner and it would be great! At the park, you could have a bbq or potluck, which would be great as well. All you would have to do is buy the table cloth and table settings & drinks and it would be a great double celebration. Babies at 1 year old don't remember too much, but they have just as much fun as you on your birthday opening presents and getting attention from your party guests. You can make the most out of any child's birthday, they'll love everything you do on that day...so will you!