You are asking great questions that bring me back to my awakening after my divorce.
So I'm curious, why must sex be rushed, according to game principles? I actually planned on taking things slow though I do plan on kissing her when we meet on Sunday.
This all depends on what you mean by "rushed." After my divorce and before I learned game and RP, my definition of rushed was very different from what it is now, as is my understanding about how quickly women want sex and what is likely to happen if they are ready for it and you don't give it to them.
9 out of 10 interested women don't want to take things slow with a guy they are attracted to, and a masculine man doesn't want to take things slow either. You like sex right? Any reason you wouldn't want to have sex with a variety of women you feel are attractive, and do so relatively quickly, and without any commitments, while you then take the time to get to know them and figure out which ones you want to focus your time on?
Also I hear a lot something to the effect of 'nothing attracts a woman more than not knowing where you stand'.
This advice trips a lot of guys up because it isn't specific enough. What it should really say is:
Women want to know you are interested in them (romantically and sexually), but just slightly less than she is interested in you. It should be her hoping you make the moves, not you hoping she lets you. But this doesn't mean holding all your cards close to your vest, it doesn't mean going on many dates before you give her the opportunity to have sex with you, and this is ESPECIALLY true if you are meeting these women on dating apps or on the street. If you meet them because you are famous, or are the king of a social circle, many women will pre-select you and will chase you. In this situation, you can keep them guessing for long periods of time, bread-crumbing them to drive them even crazier.... but A: Why bother if they have already pre-selected you and B: You aren't in this situation. That "long-game" works best for famous people who are trying to date a 10 who is playing hard to get.
When I first started dating post-divorce, I didn't escalate fast enough. Much of it was due to my thinking that women want to take things slowly and aren't looking for quick hook-ups. I had some successes but far more failures where women who seemed interested in me would suddenly ghost me around the second or third date, and I got a lot of responses to my 3rd or 4th date invites of, "Hey, you're really cool and we have a lot in common, I enjoy hanging out with you but I'm getting relationship-vibes from you and I'm just not looking for that right now." That's code for, "I'm just looking to hang out, have sex, have fun, and see where it goes from there" or "I AM looking for a relationship, but with someone I know is definitely sexually attracted to me." I also had a handful of, "I've really enjoyed getting to know you but I'm getting more friend vibes from you." I cringe when I think back on all the missed opportunities but it's all part of the learning process.
Women expect you to try to sleep with them. If you don't, they take this as you rejecting their attractiveness or they will think you are gay and they will eject. Some women will do so faster than others. The attractive ones with lots of options will eject sooner. And in this day of social media, dating apps and an endless supply of simps, women are at no loss of options. If she wants sex and you don't give it to her, she's gone. You will need time and experience to calibrate your radar to know when a girl has decided she is ready for sex, but in the meantime, the fool-proof way around even a completely broken radar is to simply give women the opportunity to sleep with you from the first date onward. You do this by kissing them, touching them, seeing how they respond, and inviting them back to your house under false pretenses so their negative social conditioning isn't triggered and they have the opportunity to sleep with you if they decide to. If she doesn't accept, no problem, try again on the second date. You don't lose anything by doing this.