Have any of you reworded your contract due to covid?

How many of you have returned deposits when asked due to covid (even if you think your current contract covers you)?

I've returned a few when asked. Thankfully most have rescheduled (or have provisionally rescheduled awaiting confirmation of dates the venue has available). 3 so far have requested their deposits, and rather than fight the case that booking fees are no refundable (as per contract they signed) I've just returned the deposit, wished them well and said I hope to work with them in the future. I just haven't had the inclination or head space to do otherwise.

It's got me thinking though. I want to tweak my T&C's and specifically state that in the case of such a circumstance in future it clear that booking fees are not returnable, even in such unprecedented circumstances such as a recurrance of this in the future.

I'd be interested to hear everyone else's thoughts.