A few weeks ago I purchased 3 tickets for August 18, 2025 for 10:30 am for Rijks Museum from their online museum site. My tickets each have bar code and number printed below bar code. Each ticket has a different number printed below the bar code. I now want to add another ticket for that same day and time slot. Site is not showing 1/2 hour time slots, only hourly. Does that mean 1/2 hour time slots are sold out and not available? I looked at several dates in the future and none of the dates had 1/2 hour time segments. I'm now concerned that my 3 tickets are not valid and will not be honored. Can anyone explain this? Thank you.
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