The gold bars in the vault are stacked up on tables that couldn't support the weight of that much gold. One table has about 111 bars. Each bar weighs 10 kilograms (22 pounds) and the bars on the table would weigh over 2400 pounds.
It has been established that at least two characters, Donald and Adam, have some knowledge of the Irish language, and of them at least Donald should be rather fluent. When Donald arrests a guy towards the end of the show, he says "Éirinn go Brágh", which means "Ireland forever". However he seems to use the anglicized approximation "Erin go braugh" and he says "go" like it is said in English. A person who has done his Irish homework would pronounce it approximately like omitting the T from English "got", rather than omitting the S from "goes".
The text of Mac's note to Aubrey reads "too forward for sending it", but Mac's voiceover says "too forward in sending it".