We had a 3 day drive after my husband's surgery in June. So, we bought Depends pull ups for the trip. When we got home he used a medium pad for about a week. He now uses just the light pad daily and at night mostly as precaution, with minimal incontinence. Coughing is a bad trigger and he carries a few cough drops in his pocket all the time. Alcohol is another thing that seems to cause issues overnight. So limiting that is good. He is faithful doing kegels and we know that has been a big help. As for undies, he used jockey shorts with the catheter while he normally wears boxer style. Best of luck and speedy recovery.