Will they get forced closed or not depends on your channel partners. If your channel partners use an automatic software to manage their lightning nodes and have auto force close set for nodes offline for 2 weeks or more, then your channels are likely to get force closed. If your channel partners manually manage their lightning nodes, then force close or not is at their discretion. If your channel partners don't really manage their lightning nodes, then the channels are probably going to be fine.

So, I guess the short answer is, you don't really know what will happen to your channels; but you shall see when you come back from vacation.