If "furlough" time does not count as service time, then Jackie might delay her retirement to make up for the weeks or months that she has missed being on the job.
Also, I find it hard to believe that Disney would cut back on any of the CL food offerings, because who in their right mind would pay a premium to stay CL then. Fewer guests would mean they wouldn't need as many CL Cast Members, further making the problem worse with reduced service levels.
I think the bigger issue is what the guest experience will be like once they re-open the parks. Will social distancing (for our own good) mean the cancellation of parades, no fireworks at night, huge lines to enter an attraction because you need to stand so many feet apart from one another, going on any attraction (Soarin for example), and having 2 seats on either side of you empty, meaning that because of reduced ride capacity it will take you hours to get on? I think these are the bigger issues that will keep people from going to WDW, rather than the elimination of food offerings at Club Level.