Thanks Villager, thecruisequeen and Donna,
You were right. the category (X, XN) was listed on my invoice and I received the correct category I wanted (X). It was there all the time. Thanks.
BTW, I'm curious, why would someone want a balcony overlooking a park or carnival? It seems to me that they would want to see the water on a cruise. Were you happy with your locations? I saw one balcony right next to the merry-go-round. I was afraid I would be assigned that one or one like it. Thanks again.