This is becoming a sticking point for me as I want to travel more. I had a bunch of days off (I'm still at a regional but interviewing with you next month) and I was craving Paris, so I just went for a couple days. Found a decent hotel at a decent price on booking.com. Just got back today, had a blast, UA premium economy both directions.
But I also use work itself to travel. We get downtown hotels at my regional so I take advantage of that. I've especially had fun in Canada and Mexico.
I don't know what the new Spirit PBS will allow, but at my regional I can use swapping to get 5 or more days off in a row pretty easily. I'm finishing a block of 10 days off right now, no vacation used.
Big question, can the buddy passes be used toward ZED fares or similar not-operated-by-Spirit travel?