If there is an issue, then the school will very likely contact you.
If you have specific concerns about PE, then you should be able to contact DD's form tutor at any time and ask them to find out how things are going in PE. They can then either link you up with the PE department, or get some feedback and pass this on to you. This is a totally reasonable thing to do, and the form tutor won't mind!
However, honestly, secondary school teachers don't use parents evening to raise major concerns as the time is just too tight, and often you don't see the parents of students causing concern anyway.
By all means see everyone because it's nice to have a chat, but don't feel you have to!
BTW, if students are taught by two teachers for a subject, usually only one will do the parents evening to maximise the availability of appointments for everyone.