What do you mean by "all of HBO programming"? Do you mean all of the various HBO linear channels: HBO, HBO 2, HBO Family, HBO Latino, HBO Signature, HBO Comedy, and HBO Zone?Will this new HBO channel on DISH have all of HBO programming or should we keep the Amazon Prime subscription? What do you mean "will not be available to order?" Will we have to subscribe to a DISH premium HBO package?
Or are you asking if DISH's on demand platform will contain all of the content available in the HBO hub inside their HBO Max app (which contains a lot of additional non-HBO content too)?
BTW, as for subscribing to HBO via Prime Video Channels, that option will be going away at some point this year when the existing distribution contract expires.