Here’s the definitive breakdown:
Games on ESPN, ESPN2, ESPNU, or ESPNNews, you need a cable or equivalent streaming subcription service to get. Verizon FIOS, AT&T U-Verse, Comcast, Sling, Hulu Live, YouTube TV, and probably others, can provide this.
ACC Network (ACCN) and ACC Network Extra (ACCNX) are included in that cable or streaming subscription, but may need to be purchased through an option / add-on bundle.
If you get ACCN, you get ACCNX. However, ACCNX isn’t a dedicated channel, you have to either go into the On Demand section of ACCN through your cable provider, or use the ESPN App on your smart TV and use your cable subscription log-in.
ESPN+ is a completely separate subscription service not included in your cable / streaming package’s ESPN/2/U/News/ACCN bundle. It’s either ~$10/mo by itself through plus.espn.com or it’s included in a Disney+/Hulu bundle or maybe some other promotion. This only affects non-revenue UVA sports this academic year.
The Ft Myers event is on Fox Sports (opener is on FS1, 2nd game yet to be announced). You’ll need to check whether your cable / streaming subscription includes this as well, may be a part of an add-on tier as well.
Regional Sports Network games are a thing of the past for the ACC this year. Instead, the “other” games have been moved to the CW (as we’ve seen with football this fall), which is a broadcast channel, same as CBS or Fox. That said, there’s no dedicated streaming platform for it and it doesn’t coming through on the ESPN app, so you either need (a) a cable / streaming subscription that includes local channels (an option with some streaming platforms, but not Sling), or you need an HD antenna to get them the old fashioned Over The Air way.
NCAA Tournament games are on CBS, TNT, TBS, and TruTV. Generally the March Madness App will let you watch the CBS games for free if you don’t have it on another medium, but you’ll need a cable / streaming subscription to watch the Turner network channels, and triple check if TruTV is included in your tier, sometimes it’s part of a more expensive tier.