Well, time has passed, and you haven't come back into the thread, silvercatuk. But as some others have said, perhaps you are still reading.
If so, I want you to know I sympathize w/ your feelings, including your need for advice on how to cope. I think it would help to separate a couple of things.
"I am already sensing that the mother in law wants my daughter to do things her way."
I take it you're worried about DD. This is between her and her MIL, however. No doubt. DD has also noted her MIL's pushiness and, hopefully, she'll find ways to set boundaries w/ her. It may be cold comfort, but, at least, you don't have to concern yourself w/ this.
Or perhaps you fear that your/your family's ways won't be passed on. That again, will be up to DD. She can do things your way, her MIL's way, or follow new ideas, or a little of all three. Please trust her (and SIL [son-in-law]) to make the best decisions for her and her (their) child.
"I am very concerned I will not have a relationship with the baby when it arrives as I will hardly see it"
A very understandable concern, IMO. Hugs! Please take some comfort in the stories others have told you about fond memories of LDGPs (long distance grandparents). Growing up, I lived far from one GM (grandmother), and only got to visit her about once a year. But it was an extended visit, and I have vivid memories of her.
And that was w/o today's technology. Sure, I get the fact that Skyping and FaceTime, etc. aren't the same as an in-person hug. I think you can develop a relationship w/ your GC, nonetheless, if you make your Skype or FaceTime sessions as memorable as possible. Especially as GC gets older, you can read to her, play word games, etc. during those virtual "visits." You can create wonderful memories for you both over time. No, you won't be able to be closely involved, but you won't be "shut out either. You may have a different relationship w/ GC than you would like, but, IMO, you can build your own special relationship. Please don't walk away from all the joy you both can have.