ski all I can say is, first time I rode after having LC was about 3-4 months after I guess. I had to get off and mop the saddle as it was covered in my own wee.
Now you may not get that problem - but it's pretty common. I REALLY need to do more kegels as it's still not fixed.
Other than that you should be ok assuming you don't get too many stitches or whatever and of course assuming you don't have a section, otherwise clearly no way.
Heat = misery when heavily pregnant. But even if you can't go and ski, you can go and sit in the snow! Niiiice.
Re: advice. I'm getting less this time thank goodness, but my advice is (LOL), nod and smile. Think of it this way. You will typically get loads of riding/horse care advice from horsey people (and maybe ski people), especially when you're learning to ride or ski. Some you know is crap, some worth trying. As with that, take what you feel resonates with you and ignore the rest. But generally people offer advice to try to be kind, I guess, and given that it's such a great unknown that one steps into when one gets diffed, it's understandable that people want to help. And there's a lot of looking back and thinking "I wish I'd known..." which does get passed on and may or may not be relevant.
The problem really comes when advice becomes being pushy. For instance, I was "advised" to put LC on the bottle for the evening feed so ex could feed him and get closer to him. In fact, I was told that it was probably me insisting on BF that meant I was pushing ex away from LC which is why he wasn't building up a relationship. Despite the trauma I was going through I knew for an absolute fact that if I DID put LC on the bottle, ex would still refuse to do anything but it was made out that ex ignoring LC WAS MY FAULT.
In the end I did just that, despite being absolutely determined to not give him cow's milk based formula, and it was very distressing. Guess what - ex didn't want to know and had a go at me for "trying to force me to have anything to do with that thing". It lasted 2-3 nights and I put him back on the breast.
The point being, I was in the most vulnerable position possible, and I was essentially guilted and bullied into doing something that I knew was completely not going to work just to prove that it wasn't me that was causing the situation. This time round I have the confidence to tell people (including my (obv ex-)MIL, and the HV, who were the two telling me to do this), to go stick their advice up their jacksies if it comes to them being that pushy, coz I really do know what's best.