Just received and took a "Survey About Your Upcoming Tauck Trip" (our 4/2021 Jordan and Egypt). Short and to the point: will we travel if there isn't a vaccine (no), when would we cancel (at final payment), would we rebook (yes), where to (Europe), and when do we expect to take our next Tauck tour (left unanswered because it was specific date ranges whereas our answer would be of the form "when there is a widely available vaccine").
I commend Tauck for being proactive about this. Our other planned travel providers have not specifically asked us for our input.