Same as Diana, I was taken to a strip club for my 18th. It wasn't my choice or what I wanted, but some people arranged for it to happen. XP I was taken to a lady strip club, and I happened to be a closet transboy identifying as my agab (female) at the time so that was something for sure. All those strippers thought I was the cutest and wanted to take me home with them and they were like, "Come back when you graduate high school. Wear your grad gown with NOTHING UNDERNEATH, WOOOO~" and omg just. Omg. lmaoooo good memories but also I wished I had been taken to a theme park or a shopping trip out of town or a concert... That said, those were some of the nicest ladies I ever met. I miss them sometimes. I befriended a few of them even though I never went back to the club. I wonder what they're up to now. But anyway--
For your 18th, just make it memorable. Make it fun. Do whatever you wanna do and celebrate yourself. At the end of the day, age doesn't matter as much as this question: "did you have a good day, birthday king/queen/quing?" That's how I feel about it, anyway. I'm 32 now and I get less and less inspired to do things because, well, I'm getting old and tired. (But also I suffer a lot of discomforts that make me feel older than I'm supposed to.) Live it up, friend. Go to the musicals, go to the places, eat the food.