How does being a summer analyst compare to being a FT analyst?

I was an SA during summer '21 at a BB IB. I really enjoyed my time there and it was probably the happiest I've been in the last few years (doing school remotely for 3 semesters and dealing with isolation really really really did a number on my mental health so being in person was a nice chance of pace).I definitely had my fair share of fuck ups, but I noticed that I was starting to get the hang of things towards the end of it. My feedback throughout my time there was generally positive and I was never told that I was in danger of not getting a return offer. The hours weren't too bad and I felt like I often stayed in the office later than a lot of the FT people on my team because I was trying to seem like a team player (although I assume that most of them were simply leaving the office to log back in at home).I ended up getting the return and am sorta anxious about being an analyst FT. I was a pretty decent SA, but I'm not sure if that's gonna mean much once I go FT. I'm just worried that even though I did good as an SA, I'm going to be completely incompetent with the added responsibilities of being a FT analyst. What are some of the biggest things to consider when making the jump from SA to FT? How did your experience change?