Summer holiday plans across Europe are being significantly reshaped as travellers contend with soaring costs and geopolitical tensions, prompting a shift towards more cautious, closer-to-home, and often last-minute bookings. Many are now opting for shorter trips and alternative modes of transport, wary of rising airfares and potential disruptions. Greg Abbott, a 54-year-old Britain-based Australian, exemplifies this trend. He is planning a cycling trip in Austria , a festival in Barcelona , and potentially a yoga retreat in France , but is keeping his options open and staying closer to home. "We'll almost certainly be doing short-haul Europe, and almost certainly be doing trains, because they run on electricity," said Abbott, head of operations for a broadcasting company, highlighting cost as a primary concern.…