^^ Of course everything began to change when Meghan and Harry began dating seriously and discovered a deep connection that continued to grow. From everything I've heard Harry say in interviews (when the questions turn to marriage and kids), he's quite aware of the heavy baggage that comes with dating a British royal. In fact, he's experienced the downside before with both Chelsy and Cressida.
In a way, Harry's prior experiences may have prepared him for how to manage his current relationship in terms of keeping it as private as possible. Plus perhaps Meghan's previous relationships have also been important in preparing her for this one. Probably they have both been laid back about taking their time to know each other, and from all accounts, things clicked for them fairly quickly and easily. It's seemingly been the tabloid uproar and over-scrutiny that has been the most difficult and annoying hurdle.
In a U.S. television interview (posted on Youtube) around the time of William's marriage to Kate, Harry spoke about having always 'longed to have kids,' but also realising that he has to find the right person willing to take on the job (meaning all the baggage that comes with dating and marrying a British royal). Certainly there are a lot of perks too. -- Click on the below link as the video can't be played on other websites.
https://www.youtube.com/watch?v=WXW3gPt1tjE
I think Meghan is extraordinarily prepared to 'take on' royal life and marriage to Harry, with her interests, intelligence, and experience in the public eye. However, I'm sure she's receiving a lot of help with understanding the ins-and-outs of royal protocol. Having to navigate the mix of personalities in the royal family is probably another hurdle. But maybe not so much for Meghan, since she seems confident, down-to-earth, disarming and fun-loving. I think she's also self-assured yet humble, so maybe she's quite suited to being the wife of the second royal son (despite the media's intensity of interest due to her background, fashion sense, and because she's American and an actress).
I doubt Meghan will have any problems following behind Kate, and avoiding any attention-grabbing spotlight. It won't be because Meghan's seeking it out that attention is shined on her. She's not interested at this point in being publicly scrutinized. It's been amazing how she and Harry have managed to keep a low profile and stump the media with their comings and goings. After an engagement announcement, the Palace will likely step in to place the handcuffs on the media and lay down the law regarding media nonsense and intrusiveness. Deals re access and limited coverage will likely be made with the compliant and more respectable media outlets.