adlibitum

We're planning to stay a night in Strasbourg, have lunch at the fabulous L'Auberge de l'Ill outside of Colmar, then continue on to Zurich. We're travelling mainly by train, which means we thought of train Strasbourg to Selestat, taxi to restaurant, taxi to Colmar and train to Zurich.

But we aren't sure what to do with our two roll-ons. Is it gauche to even consider asking if the restaurant can accomodate them during our meal? Otherwise does anyone know if there are luggage lockers anywhere in the vicinity? In a similar situation once in Alsace, a taxi driver offered to keep the bags in his car between taking us to train stations. Bad idea or possibility? Thanks.