An unresponsive guest can be a little nerve-racking, but try not to worry. If your guest doesn’t respond to your trip change request, the reservation details will remain as is.
When to send a message
Because your guest’s reservation was already confirmed, a trip change request may come as a surprise to them. To ensure they have time to consider your changes, there’s no time limit for their response.
That said, if your request is important or urgent, send a message reminding them to accept or decline it. You can also try canceling the request and sending a new one.