[This post is for purpose of discussion only and should not be relied upon for practical halacha]
The Star-K's Kashrus Kurrents had a very useful article on the various halachic questions that arise when traveling (here). I do not understand some of his conclusions and wonder if any of my readers have additional information on this subject.
1 - "Pre-cut fruits or vegetables should be avoided, since they may have been cut with a knife that was used for non-kosher food"
He cites the Rema that permits lemons pieces because many are cut at once and it is batel, but says that this doesn't apply in the a hotel setting. Even if this "metzius" is correct, this should only apply to sharp/citrus fruits. Wouldn't apples or non-sharp vegetables be OK?
2 - Unfiltered water in NYC -
What is the final status of the water? I understand that R' Belsky permitted it. But even among those who are machmir, is this a chumra of מהיות טוב which might be permitted when traveling or an actual prohibition.
3 - it is recommended that one refrain from using the carafe.
I don't get this. It is almost certainly not a ben-yomo. Even if it is, a glass carafe should in any event be permitted (שיעי) and this concern should only apply to a metal vessel.
4 - If the hotel provides fruit juices without clearly specifying the brand name. Is it necessary to clarify this or can one rely on the fact that the majority of available juices are kosher (I believe that even those juices that contain grape juice and therefore do not have a kashrus symbol are at least b'dieved kosher.)