Work travel is different and has lots of advantages.
Check your company has organised suitable travel insurance - don't assume.
But the nice thing is, no matter what goes wrong, they will be picking up the bill.
I worked as an international events organiser and it's always a challenge. Get to know the hotel and conference centre concierges as soon as you arrive. They can help you with everything from lost deliveries to disgruntled customers.
Always check food availability - people's requirements for different categories of food often need to be arranged in advance, so the hotel events team are essential contacts too. And try to use the same airline regularly, you will qualify for better seating and get to know the terminal crews on regular routes. Join their frequent flyer program. Program their frequent flyer helpline into your phone.
If travelling to places where language is an issue, I found having a hold-bag of useful stuff - small first aid kit, small toolkit for your tradeshow stand (stapler, scissors, multi-head screwdriver etc), local currency, hang-over cures, condoms for young sales team's use 🙄etc can be very useful.
International power adapters are essential, make sure your phone is always charged, and if you don't have a company credit card, have a separate credit card of your own that you use for all business expenses. It will make claiming at the end of the month MUCH easier. Good luck 🤗