I flew to Zermatt last summer and overslept on the first day, so I missed the opportunity to ski in the morning. I was a little disappointed. But it’s actually really cool there. You ski on the glacier in the morning and stroll around the green village in a T-shirt by afternoon. It’s worth booking ski rentals in advance since finding them on the spot can be a hassle. I used the website
https://getski.com/ , where I booked a set from home. I selected my skill level, specified my measurements, and picked up the skis the next day since I slept through the first day. I got a great rental company, by the way-they didn’t charge me for the day I slept through, even though we’d agreed to that on the website. What kind of summer gear do you bring?