The signature Chiang Mai half day is Doi Suthep at dusk. Wat Umong & Doi Suthep Chiang Mai Night Tour - Korean Speaking Guide pairs Wat Umong with Doi Suthep and climbs around sunset with Korean commentary, which leaves the daytime free for something else. For a daytime version, Doi Suthep, Trival Village Join tour is the alternative.
For nature, Doi Inthanon is the reference. Doi Inthanon National Park Tour + Trekking 2 Hours includes a walking section around Thailand's highest peak, and the Chuseok travel period brings the fullest waterfall scenery. The long round trip takes a whole day, so allocate it once across four days.
Chiang Rai needs a full day of its own. Taxi Tour White Temple, Black House, Blue Temple, Singha Park - Chiang Rai travels by private vehicle so you can set the pace. The long drive can make private easier with children or older parents.
To see Old City temples at a slower pace, Chiang Mai Old Town Temple Half Day Tour - Korean Speaking Guide fits. The walking distance is modest, which suits older parents, and Korean commentary makes the temples easier to understand. For cafes and viewpoints, a multi-stop private product such as Taxi Tour Chiang Mai Popular Cafe, Monjam, Huwei Tungtao Lake, Night Doi Suthep is useful.
For hands-on sessions, consider Mamanoi Cookery School Chiang Mai and Elephant Jungle Sanctuary Chiang Mai Half Day Tour. The cooking class is largely indoors, which makes it a rainy-day alternative, while elephant programmes differ in format and level of animal contact, so read the details.
Before booking, confirm guide language, meeting point and pickup, departure and return times, shared or private format, entrance fee and meal inclusions, minimum participants, footwear and clothing guidance for trekking sections, and wet-weather operation with cancellation or refund rules. Korean-guided products can sell out first during this holiday.