Hope you enjoy your trip. Bled is very nice to see. Better to be there outside the real tourist season which is now finishing/ finished. Adventure sport is the main thing to do here, lake is quite nice too. Ljubiana as mentioned would also be nice to see along the way. IF you have an extra day/ two would reccomend Plitvice in north Croatia, 3.3 hours by car from Bled according to google maps, public transport went there 3 years ago anyway, bet it still goes now direct from Ljubiana. Plitvice is stunning. Nearest airport to Plivice flying Dublin, I think is Zadar (city worth a quick look)-cheap Ryanair flight possible. Then could return from Ljubiana with Adria airways as above. 2 tourist caves in Slovenia, Postiama and Scotciama (my spelling is pathetic!), I went to one of these before, not sure which and was great to see. Enjoy it