The OPT Yahoo! trip calendar already has the YVR/AMS/OPT legs correctly listed for Mr. & Mrs. Bowgie, so I'm posting this again just for the sake of addiing hotel and intra-Europe legs:

5-23 LAX to YVR UA8472 (AC)
5-23 YVR to OPT (via AMS) KL682 and KL1361
5-24 OPT Intercontinental Hotel
5-25 OPT to BUD (Wizz Air)
5-25 thru 5-28 Kalvin House in BUD
5-28 BUD to TGM (Targu Mures on Wizz Air)
5-29 thru 5-30 Casa Legenda in old Sighisora
5-31 thru 6-1 Brasov
6-3 OPT Intercontinental Hotel
6-4 OPT to AMS KL1358
6-4,5 AMS A-Train Hotel
6-6 AMS KL681
6-7 VYR to BLI (Amtrak)
6-9 SEA to LAX UA1175