Planning guys bachelor trip to Europe. Need suggestions.

Hi, I’m planning a trip to Europe from 15th August to 30th August 2024. Please help me with the itinerary, dates can be shifted (apart for the already booked flights). We’re a group of 5 guys for bachelor’s trip. Please feel free to recommend places, some travel tips since this is our maiden trip outside our country. Thanks in advance. Below is the current draft itinerary: - 15th: Land in Paris 7:30 evening, do immigration, take overnight bus to Amsterdam (flights booked already) - 16,17,18,19: Keep Amsterdam as base and explore Amsterdam, Zaans Schaans, Belgium (day trip) - 20th - Travel to eindhoven, take a afternoon flight to Rome (flights booked already) - 21,22 - Explore Rome - 23, 24, 25 - Travel to Sorrento via Naples. Explore Amalfi Coast - 26 - Travel back to Rome and take evening flight to Barcelona - 27, 28, 29 - Explore Barcelona or some nearby areas (not planned yet). Was thinking for Tomatina, but its planning seemed too much hassle. Do let me know if it’s worth the hassle. - 30th - Take evening flight from Barcelona back home country (flights booked already)