I presume that "CruiseTours" is not a company name. 1. There are many cruises to choose from plus countless ways to add to your adventure with optional excursions and local side tours. 2. 7 or 14-day cruises depart from Vancouver, British Columbia, and from Seattle. 3. You can expand your adventure on an ABC Cruise Line cruise into Denali National Park or in the Yukon Territory and beyond. 4. Denali National Park is a fully intact ecosystem, where bear, moose, sheep and caribou forage in the area of Mt. McKinley. Are these texts written by a native speaker? Could be. Native speakers have a wide range of abilities. I found some grammar that seems kind of obscure and do not sound natural. You are right to doubt the naturalness of the script. It could do with changes. Seems some confusion about geography. Google tells me Denali is in Alaska, but the Yukon is not.

Thank Sarah! It's very considerate of you to correct the texts.

1. CruiseTours offers many cruises to choose from with countless optional excursions and local tours. 2. The 7- or 14-day cruises have departure options from Vancouver, British Columbia and Seattle, Washington. 3. You can enhance your adventure with an ABC Cruise Line CruiseTour with an excursion to the Denali National Park in Alaska or to Yukon, Canada and beyond! 4. Denali National Park has a flourishing ecosystem where bears, moose, sheep, and caribou are spotted by Mt. McKinley. The texts you submitted are not by an English speaker. I worked in hospitality for 5 years and saw many, many tour groups with very poorly written information that were still somehow extremely popular.