Will there ever be an end to feeling like I have no idea what the hell I'm doing? haha. What have I gotten myself into?

LO is turning 1 in exactly one month! Aaaah. So we've been planning a birthday party for him with family and close friends. We decided to reserve a picnic pavilion at a local amusement park. One of the deciding factors of this was that reserving the pavilion is *free* (score) and admission to the amusement park is also free (double score!). You can purchase books of tickets to ride rides and play games and so forth.

So my budget is seriously weak. We're struggling to come up with money to meet rent, our bills and just food for this shindig. Thus imagine my panic when a friend of mine mentioned that I was expected to buy everyone tickets for rides/games. I had no idea. None. Kids parties are a completely new scene for me. :S

Is this a legit expectation? I'm not sure how I'm going to swing with buy $5 books of tickets for everyone. Admission to the park is free and I plan to feed everyone. I did the whole controversial "no gifts" request, too (which I also had no idea was an issue until doing it).