Best of Adriatic September pre- post tour suggestions

This was the best tour! I spent a couple of days in Ljubljana pre-tour and went on 2 day tours with a company called To Do in Slovenia (I found them through Trip Advisor but booked directly with them on their website). One day we went to the Lipica Stud Farm and then on to the coastal town of Piran which was lovely - what an interesting little town to wander the narrow streets. The second day I went on a trip to Postojna Cave which was absolutely amazing, and then we stopped at Predjama Castle on the way back. Both trips were in a minivan with a couple of other people and the driver/guide provided a good commentary on the way to and from. Once at each location you were on your own to enjoy the sights at your own pace, and just had to meet the van in time for departure. Very inexpensive way to get to some interesting sights without having to navigate on my own. I was picked up a couple of blocks from my hotel both times, so it was easy. The city of Ljubljana is definitely worth some time to explore on your own as well. After the tour you may want to look at spending a day or 2 or 3 in Montenegro - beautiful country and coastline.