By linking the base date query (with or without the ExDates) you can determine whether an attraction is booked or not...

build a query and add the Base Date query to it, now add your Bookings table (no links) and set the fields up in the same way as for the ExDates, but you will need > and < appropriately to determine the period between your dates... see what I mean?

This will affectively create a huge table of every piece of equipment (attraction) you have and also the specific days when it is available... is this not what you want?

This is possibly over egging the pudding... but there are bonuses all the way along with this method - mainly in reporting.

i do understand what you meaning, but the another problem is that
i don't have the skills to do it that easely.