I can't say with 100% accuracy, as I had that much work done , but if you've got healing caps in place, they might need removing, so that an impression can be taken close to the gum line. Whatever the work involved is, it's not intrusive and involves virtually no moving of anything.
If you've had a crown, then your new teeth just feel like a crown. They're nothing like a denture and should fit nice and tight up to your gum line, so even when you rub your tongue on them, you'll hardly notice any difference between them and your own teeth. There is a small difference, but it's hardly noticeable and you'll soon get used to them .... you may not even notice any difference between them and your own teeth.
With regards to your gums, you've got to remember that they've undergone a major trauma. 18 months later and my gums still don't quite feel like the rest of the gums. I've got used to it now, but I think the gum area around my implants is slightly less sensitive than the rest - almost as if some of the nerves have been killed off. It's nothing major, just something I notice from time to time.