The person who makes the booking, and therefore takes responsibility for their group, is required to bring up-to-date photographic ID (passport or driving licence).
Mae'n ofynnol i'r sawl sy'n archebu, ac sydd felly'n cymryd cyfrifoldeb am eu grŵp, ddod â'r ID ffotograffig diweddaraf (pasbort neu drwydded yrru).