@Zeneth,
As someone whose tinnitus has gotten worse over time, going from easily maskable to hardly maskable (except for shower etc), I do not think any amusement park experience is worth the potential cost of having to live with a piercing and unremitting ringing in the ears.
I would therefore urge caution.
You are very young. I hardly remember being your age, feels like a life time ago, but I do remember those amusement park rides and I did enjoy them a lot.
I'm not surprised you want to experience them, most 13-year-olds probably would.
I do not know what the outcome of this will be. For all we know, your ears might be fine when you come back home. Or you might experience a temporary spike. Or things could become worse for good.
Let's assume there was only a very minor chance of things becoming worse permanently (which I think is the case if you remember proper hearing protection, but don't take my word for it, it's only my gut feeling).
If you put that slight possibility on one end of the scale, and seeing through this amusement park experience on the other end of the scale, which will you pick?
Are you willing to take that minor risk of permanent worsening of your tinnitus for the short-term experience of fun?
Thing is, you cannot live your life through fear. It's no good living in a box and not do fun stuff because of fear.
But... you can also have fun doing other stuff that carry absolutely no appreciable risk for any detriment to your hearing or tinnitus.
It's a tough choice, and not something a 13-yo should make. I feel bad you're having to deal with this kind of stuff at your age.