I was terrified about having my port put in, & all the stuff that "could" go wrong, but it was the best thing ever. I use Emla numbing cream for all needles (it's FANTASTIC) , and it was great having the port as I knew exactly where to put the cream and I didn't feel a single chemo needle...perfect! It sure beats them having to poke around for veins.
I had my first chemo a week after the port was put in, it was agony - I still had stitches and swelling and they couldn't feel it, so they had to press really hard. I was wishing they had done it all on the same day. I finished chemo in March, but I've kept the port and will probably keep it another year or so whilst I have to have regular blood tests.
Best of luck with whatever you decide :-)