Janis, the time will fly, and you will hardly believe it soon when you are done!
I had the tattoos, they never offered me any other options. I had a green paint pen to mark the area for the boost at the end, but have 4 teeny blackish dots. One is right between my breasts and if I wear something low cut, it is visible. I don't care, it looks like a freckle. 2 are on my sides and one is on the side of the breast, right next to a mole (wonder why they could not use the mole instead??). But if you have to get them, it is not a big deal at all....a tiny prick and that is it.
Good luck with this all! I found my breast got pink and tender, but my skin was soft and healthy, no blisters or any problems. I was able to wear my bras all the way through. 5 years later, my breast is still tender and I guess always will be, but the appearance is ok too.
Hang in there!