I'm sorry your parents are trying to guilt you into throwing a wedding you cannot afford. Sounds like something my parents might do. They still see me as a little girl although I am 36. I just don't tell them much about my life (who I'm dating, etc) because I don't want them to get upset. It's not really a good situation, but it's all I can think of to do.

I hope your parents won't give you a hard time when you tell them what you want.