I'm a fan of party city! They have a really good selection when it comes to decorations, balloons, and things you never knew you needed. You can end up spending a lot more money than anticipated if you're not careful, (It's kind of like a Target thing in that regard). If you have a budget, I would recommend writing out a list and sticking to it or else you could easily go overboard.
It's much more expensive than a place such as Walmart, but for good reason; you won't find things in Walmart that you can find here.
A side note: They have gender-reveal streamers and balloons if you're hosting a gender-reveal party! There is no warranty on the gender confetti balloon, so be careful taking it to the car and handling it (no pressure).
Overall, the customers are helpful and friendly at this location.