I elected not to have a port, and considering that I had to have an IV every day (1/wk for chemo and related, 5x/wk for Amifostine), the repeated sticks got old. However, I also did not have to worry about maintaining the port, etc.
I did not have a PEG, but I am likely the exception and not the rule. My side effects were not as severe as many, despite the fact that I had 39 radiation treatments. I had to force myself to eat, with substantial assistance from the wife, and had a limited range of choices toward the end. I lost about 32 pounds, but was able to resume regular eating pretty quickly.
Very individual choice, but lots of wisdom here.