I"m a creature of habit and normally ride the same routes outside, so the Zwift course thing doesn't bother me at all.
Get a USB cord extension for your dongle (plastic baggie is a good idea.) Get on with some friends, or make some new ones, and ride like you do IRL.
Not much opportunity to coast, so you get a pretty good workout. They have some excellent group workouts as well as ones you can do on your own.
The climbing is pretty realistic (as is the entire experience with a good trainer and riding mates) and the races are fierce. Start full gas and hope to hang on until things settle down.