I think this is a great thread, with lots of Rabbonim for emergency and vacation shailos.
That being said, it’s important to have a rav who knows you and your particular circumstances to answer your halacha needs. There will be some shailos based on your minhagim, and some based on your particular circumstances (yes, there are kulos that rabbonim will use only in time of urgency).
My rav has at times called me back to clarify the situation.