My first ride was one without comfort collars. I was fortunate that it reopened on the day we drove back home. The trains are still difficult to get in/ out but it's a night and day difference without the collars. The ride was extremely freeing without them and the seatbelt didn't have any hinderance to the ride... just to the operations. I am worried about what this is going to do to capacity because the trains are so small, it's very easy for someone to sit on top of the belt and not realize it's there. Operators do the same thing like on Iron Gwazi / Twisted Timbers and will check seatbelts first before locking the restraints and pulling them down. Empty seats will be annoying as well because operators have to close the lapbar and loop the seatbelt around it assumingly because there is so much slack in the belt with no rider (I guess to prevent it from banging around during the ride).
But the ride itself was fantastic. I never got a ride with the collars, but I have ridden Tigris and Tempesto so I'm aware of how they're. I could care less for the seatbelt due to the impact it will have on operations, but the trade off for enhanced ride experience is worth it.