Our experience in Newfoundland:
First, diesel is a bit harder to come by here. Some of the stations are commercial diesel only. Sometimes the attendant will let you use his card so you can pump, but that was not always the case. Irving has some pretty big stations and they are usually all right. Internet and phone service is here and there. Sometimes you have it, but mostly you don't. The parks, for the most part, are 30 amp. We took the short ferry to Newfoundland and stayed at the Grand Codroy park. Then up to Gros Morne. Then we took the car to L'Anse Aux Meadows and Labrador. It would be fine to take the coach up. The roads were good. Eat at the Norseman restaurant in L'Anse Aux Meadows, it was awesome. You might see icebergs on the way up to L'Anse Aux Meadows. It turns out they were floating in the Straits of Labrador. We didn't know what they were until we blew up the pictures. Everyone said there weren't any that year--wrong. Gros Morne was great. Java Jacks in Rocky Harbor, near the campground was a great restaurant. The boat trip on Western Brook was really nice. We also went to the Burnt Cape ecological center which was beautiful in an eerie sort of way. You might not want to take a standard car on some of these back roads as it can get pretty rough. We went for the day to Labrador (8am ferry over, 3:30 back). It was enough time.
We did not stop at Windsor, but, perhaps should have. Instead we went to Gander and stayed in the Country Inn Motel and Campground. The power was a little iffy and the water just ok, at least we didn't have to boil it. I would skip Twillingate if I had to do it over. No icebergs there has really hurt the town. After Gander we headed to Charleston, staying at the Cabot cabins and rv park. They now have 30 amps and they gave us a great site right next to the pond. From there it was 20 minutes to Trinity, a beautiful little town. We also went to Bona Vista and Elliston where we saw puffins and whales. Be sure to schedule enough time there to go on the Rugged Beauty boat trip. This was one of the best things we have done. Bruce gives a tour at 10:00 and 2:00 and takes you to some of the out areas by boat. He gives an interesting perspective on the native Newfoundlanders. We saw many eagles and a whale as well as the abandoned communities along the coastline.
We then went to Hollyrood and stayed at the Bluefin RV park. (This was as opposed It is $10 more for 50 amp, but I had to have it. The internet is all right, not real robust, but it gets the job done.