Will be in Germany for a month In October of this year. Since I have lots of time, I would like to maintain flexibility to adjust my intinerary as the trip evolves and would like to make reservations between 1-3 days in advance as the trip progresses. Will be focusing on Central and Southern Germany, and Vienna area. Will be avoiding Octoberfest by design. Is this doable at this time of year? Is it advisable? Will be landing at Frankfurt and will have initial reservations made in advance. Your thoughts and advice?