I don't think it's stressed enough. Technique, technique, technique.. I know that once you've attained the proper jab n cross and perhaps even a decent hook, it is very tempting to want to throw them and spar. To my understanding most camps, commercialized or not, tend to offer their novice students opportunities to spar or engage in relatively advanced drills and conditioning.
I'm glad to hear you had the pleasure of sparring in something you love to do. If someone is getting his/her hands past your defense, all I can suggest is that you get back to basics and work work work on your parrying and vigilance (preparedness for the punch or kick). Please don't take my post as criticism or insult, because that isn't my intention. I've been there myself and foolishly let it hurt my pride, ultimately hindering weeks of honest training. You are in there for yourself and the only challenge is letting or pushing yourself to where you're going to be.
Best wishes. Respect your kru.