Q1. Is there any exemption for oversized musical instruments and sports equipment on the MTR luggage size restrictions?
Yes.
According to MTR Registration Scheme for Carriage of Oversized Musical Instruments and Sports Equipment (see: https://www.mtr.com.hk/archive/ch/services/oversized_item_terms.pdf), passengers who wish to carry an oversized musical instrument or sports equipment in MTR premises during designated service hours (throughout service hours except for Monday to Friday 08:15 to 09:15 (non-public holidays, based on entry time into the system), with total dimensions (length + width + height) not exceeding 235 cm and any one side not exceeding 145 cm, including the case or bag, which is outside the current permitted limits of baggage (total dimensions do not exceed 170cm and any one side does not exceed 130cm), can apply for the “MTR Carriage for Oversized Musical Instrument and Sports Equipment Permit”. Each Passenger only needs to apply for one permit.
Applicants may collect their permit from the selected station 7 working days after submitting the application or upon receiving an email notification that the permit is ready for collection.
Thus, there is exemption for oversized musical instruments and sports equipment on the MTR luggage size restrictions upon the application by passenger for a permit.