I also can't help on the bleeding issue (I'm sure I have read comments from other ladies with just this problem though, so I am sure someone will come along who can answer that one)
Regarding treatment on the day, it probably depends on what they see. In my case, my smear was borderline but the consultant said that she thought CIN1 or CIN2 (that's mild or moderate cell changes), so she just took some biopsies on the day. The reason being that if the results came back CIN1, they wouldn't treat it, but would monitor it as this level of cell change can revert back to normal on its own. If it was CIN2 they would treat it. They don't want to treat anyone unnecessarily, hence the biopsies to be sure.
The biopsies came back CIN2 (moderate changes), so I will be going back for LLETZ treatment soon.
My consultant was very happy to answer my questions on the day. I only know her guess at CIN level based on the visual inspection becuase I asked her what she thought it looked like. It's probably a good idea to ask, as it makes the wait for results a bit less stressful if you already have a fairly good idea of what they're likely to be. It's definitely worth thinking about what you want to ask ahead of your appointment.
It might also be worth phoning the clinic/hospital when you get your appointment through, to tell them that you are 'a bleeder' and also it will then give you the opportunity to ask them to explain a bit what their normal practice is regarding treatment, because I think it can differ from place to place. My colposcopy unit encourages you to give them a ring if you've got any questions.
I know from responses to my other posts (I put one up after being offered the option of general anaesthetic for the LLETZ) that if there is a medical reason that you bleed heavily at the slightest provocation, they might need to perform any treatment that you need under GA anyway, in which case they wouldn't be able to do it on the day. Again, hopefully one of the lovely ladies who suffers with the same problem can probably advise you on that one.
Best of luck and I hope that your appointment puts your mind at rest.