What Camera

We will be visiting Antarctica at the end of November. Will be on the Quark Ultramarine. This is my first time but, second time for my SO. As a couple, we have traveled to 10 countries in the last 3 years, and have had more than one "once in a lifetime" experience but, this one is special.

For camera equipment she uses a point and shoot Olympus compact and her iPhone 13. She does well with her choices. I have a Sony video camera and a 20 year-old Canon point and shoot and want to upgrade for this and future trips. I've attempted to wade thru as much info as i can handle, but still have no idea on what I should purchase. Right now, I am leaning toward the Olympus E-PL5 with a couple of zoom lenses. Prices run around $250, (used/refurbished) which is my target price for whatever I settle on. I'd like good cold tolerance, good battery life (I'll buy more before going) reasonable 1080P video, interchangeable lenses, and all the other good stuff. A photographer acquaintance of mine says I can't go wrong with Canon and Fuji. I like some of their examples.

Am very interested in your responses, particularly the veterans out there. Thanks for looking!