| possession of passport | 0.56 |
| good health | 0.54 |
| the airport | 0.44 |
| transit | 0.42 |
| luck | 0.30 |
| enter the united states | 0.77 |
| choose | 0.77 |
| exercise caution | 0.75 |
| seek comfort | 0.74 |
| rent car | 0.73 |
| take bus | 0.72 |
| spend time | 0.71 |
| seek convenience | 0.70 |
| purchase ticket | 0.70 |
| spend the night | 0.68 |
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| rent car | 0.53 |
| take in sound | 0.45 |
| get off beaten track | 0.45 |
| see the world | 0.36 |
| adventure | 0.32 |
| spend time | 0.32 |
| service | 0.28 |
| experience nature | 0.27 |
| seclusion | 0.25 |
| the option | 0.73 |
| passport | 0.68 |
| valid passport | 0.67 |
| many options | 0.64 |
| different needs | 0.56 |
| question | 0.56 |
| the flexibility | 0.56 |
| right | 0.56 |
| itinerary | 0.56 |
| ticket | 0.56 |
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| passport | 0.66 |
| vaccination | 0.65 |
| special assistance | 0.61 |
| place | 0.60 |
| accommodation | 0.57 |
| valid passport | 0.56 |
| such assistance | 0.50 |
| a voltage converter | 0.46 |
| travel documents | 0.42 |
| young travelers | 0.40 |
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| prepared | 0.67 |
| reimbursed | 0.64 |
| concerned | 0.64 |
| advised | 0.64 |
| aware of their surround… | 0.61 |
| informed | 0.61 |
| required to have passpo… | 0.60 |
| encouraged | 0.60 |
| aware of risk | 0.59 |
| treated | 0.57 |
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