With my first T, I didn't really care if she went on vacation or how long she was gone. With my second T, I didn't care at first but the longer I saw her the more I missed her when she was away. She would go abroad for several weeks and it was agonizing. The first session back would be weird, never enough time, by the time we got back into the "groove" time would be up. I would send her with little handmade cards and such on her trip and one time sent her with a plastic soldier when I was feeling particularly vulnerable and thus ridiculously worried about her safety so sometimes we would talk about those things. Like how many times I checked the news for news of a plane crash in the country she was visiting. Stuff like that.