Should I go to this trip to Italy?

Ok, so this is how it is:
Well, I'm in the 6th grade. I take Italian classes (in our school) and so do many others from my class (including my best friends). We will go to Italy in March or April and we have to decide (till Thursday) if we want to go. My best friends don't want to go because they hate the teacher. She's not so mean to them, but I don't blame them. It's just that the 3 people that are my best friends won't go (2 are 100% and the other on is 90% sure). And, not to mention that other people from my class (most of my friends [not BFF]) won't go, either. There are few persons who will go and they all are my friends (not BFF) and the boys will go, too (it's not so important, it's not like I have crush or something).

Here's my opinion:
I'd LOVE to go, but still I'm sad because they won't go. I still know that if I don't go to that trip, I'll regret it later on. And, my life motto is: 'Live your life so you have nothing to regret for!' So, I'll probably go.

I just wanted to ask you people what do you think about it.
Btw, in our class, there are no popular or un-popular people, we're all (mostly) friends or we have nothing against each other. But, there are exceptions. So, just to know, I'm ok with all people :).

P.S. We'll be spending 3 days in Italy, including Gardeland and much more :)

Thank you ALL :)!