What's the catholic/encompassing/general term for these travel essentials? 'Travel items' is wrong; they refer to actual physical objects. 'Travel necessities' is also wrong; they technically aren't mandatory for travel. To wit, what are some nouns that can replace all of the bolded:
Could I please return to you about attending your ceremony only after you decide where to hold iton its location? I ask because the availability of hotels, flights, car rentals, .... might prove unavailable bydifficult to book once I learn about the time of my bookinglocation at a later date.
Please also advise if I can improve the writing in the above quote, especially the last sentence?