It can be simple. I use an ISP that's been providing IPv6 for years, and they were kind enough to document what users need to do to get it working (https://www.geekzone.co.nz/forums.asp?topicid=240157). However, if you use their routers (Fritz!Box), it works out of the box.
I use a third-party router (Synology) and only had to check the IPv6 box to get it running—even with multiple VLANs in my network.
There are plenty of IPv6 services around. If a service is behind Cloudflare, it's likely IPv6 will be enabled by default. It is the same with other services, including some cloud providers now giving IPv6 addresses but charging for IPv4.
My iinet connection doesn't support it; My aussie broadband one did; My starlink connection didn't; My telstra one didnt (the routers they provided didnt even support v6); Maybe starlink supports v6 now but I know people were complaining about this early on (router UI had no mention of v6 but maybe possible?)
It seems to be that you have to choose the ISPs that support it if you want it here (im based in Australia.)
Got to say, Fritz!Box really makes the setup and maintenance easy.
You will hit a wall if you want subnets and stuff but before that everything really works and they support their boxes for 6 to 10 years with updates.
Not cheap thought.
I use a third-party router (Synology) and only had to check the IPv6 box to get it running—even with multiple VLANs in my network.
There are plenty of IPv6 services around. If a service is behind Cloudflare, it's likely IPv6 will be enabled by default. It is the same with other services, including some cloud providers now giving IPv6 addresses but charging for IPv4.