they should know that the state of Maryland is pronounced more like 'MERI-lund' than 'MARY-LAND'. it made the place sound like a fun park.
Out of interest - why? That probably sounds snarky, but it's not meant to be. Merely curious. The US is a big place with a lot of place names that don't seem to neccessarily be pronounced the same throughout your own country. I'm from Australia and I would probably pronounce it Mary-land. I don't know that I've ever heard an American pronounce Melbourne correctly (It's pronounced more Mel-burn than Mel-born). I just figure, you weren't born here and you're doing your best.
Mostly because we have a lot of distinct regional, state, and even city-specific accents, and the etymology of the place names sometimes also affects the pronunciation. It is Mare-ih-lund for me, which seems to be the fairly standard way to pronounce it when not affected by a local accent.
Oddly enough, the cultural oddities that affect our place names led to my brain hurting as a teenager when I was visiting Boston for a summer program, and my boyfriend lived in the suburb Worchester, while my roommate was from Wooster, Ohio. Both place names are pronounced "Wuss-ter."