We are scheduled on the Best of Western Canada and Rocky Mountaineer tour from 8/1-8/11/2026. I was wondering what I need to pack since it appears we will be in both Warm and cooler temperatures? It sounds like it is a more casual tour so I wasn’t planning on bringing any formal clothing. Has anyone been on this trip and can help me figure out what to pack? Since there is a luggage limitation, I will need to be more creative with my female wardrobe.