Vegan and Vegetarian are on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
Weitblick sits in the Bründl Sports flagship store in Kaprun and says it serves regional, seasonal and organic food and drink, mostly from organic farmers in the region. The site says vegetarians and vegans find something on the menu, and it does not mention gluten free dishes or allergen handling. Tell the staff about your allergies, the kitchen has the final word.