Accommodation (check to see if airport transfers are included, as well as perhaps other local travel)
Airfares (be sure you get prices that include airport taxes)
A new or renewed passport (as discussed in step #7)
Local transport (from airport transfers to trains, buses, etc.)
Accommodation (check to see if airport transfers are included, as well as perhaps other local travel)
Food and drinks (you may need to buy drinking water depending on your location)
Travel insurance (see step #14)
Any national park and similar permits and fees, which cam sometimes be hefty (see step #13)
Any necessary gear and clothing (see steps #15 and #16)
A tour operator fee (it's mandatory to use a tour operator on some adventure trips, like climbing Kilimanjaro)
A tour guide, driver, porter, etc. (again, these might be mandatory)