It's better to make a reservation in advance before going on the trip.
Generated collocations (experimental)
しとくことdoing in advanceしとくべきことwhat should be done in advanceあらかじめしとくto do in advanceじゅんび準備をしとくto prepare in advanceしといたほう方がいいbetter to do (it) in advanceしとくひつよう必要があるthere is a need to do in advanceよてい予定をしとくto make plans in advanceしとくじかん時間time to prepareしとけたらいいit would be good to have done in advanceしとくべきだshould be done in advance
Lingaku