Thank you, @Dutch_Traveler for your guidance and, yes, I am new here and should have posted these three separately, but my time constraints made this more practical than logical. I'll remember to do it that way next time.
I was invited by a former work colleague only a month ago, so indeed with a year's planning done by savvy travelers, we will have to take what we can get. The tour guide said Haarlem may be better alternative and totake the train in.
Very kind of you to respond to quickly and I'll report back with findings and any additional questions.
@Nigel, I tried Go Tools once and while the product worked well, I personally had difficulty securing the top to the bottle when refilling to properly seal it.
@geovagriffith Thank you for the name of the hotel and a helpful description. Sounds perfect, but it seems we may be too late and it's booked.
@acraven I will look into the Nalgene bottles for some items, although like you I do want to consider weight. I may only need a few little lightweight jars for eye and face cream, SPF lotion and will use the hotel shampoo and conditioner to simplify and streamline. I didn't know shampoo comes in a solid form! Interesting. (My friend who travels a lot to Australia uses "Earth Breeze Eco Sheets" which are, apparently eco-friendly laundry detergent sheets. I was planning to take a small laundry bar soap. I learn something new everyday. The Container Store here has really reduced inventory and I didn't see many travel or storage items on my last visit.
Grateful to each of you and thank you again for your time and your comments.