reservation
If you were to second-guess your decision to book time to visit a Native American community, that would be a reservation reservation reservation.
The sentence describes having doubts about a booking to visit a Native American community — playing on three meanings of 'reservation' (booking, doubt, Native American land).
Meanings (pronounced /ˌrɛzərˈveɪʃən/)
an arrangement made in advance to secure a seat, room, or service
- I made a reservation for two at seven o'clock.
- Hotel reservations should be confirmed by email.
a feeling of doubt, hesitation, or unease about something
- She had reservations about the new policy.
- I accept the offer without reservations.
an area of land set aside, especially in the United States, for a Native American tribe
- The reservation borders three counties.
- Many reservations have their own governments and laws.
Word origin
From Latin reservātiō ('a keeping back, holding in reserve'), from reservāre ('to keep back, save'), formed from re- ('back') + servāre ('to keep, save'). The 'doubt' meaning developed from the metaphor of 'holding back' agreement; the 'booking' meaning from 'holding back' a seat or table; the 'Native American land' meaning from 19th-century U.S. policy of 'reserving' land for indigenous peoples — a euphemism for forced confinement.
Fun fact
All three meanings of 'reservation' come from the same Latin root reservāre ('to keep back') — the connection is the metaphor of 'holding something back from general use.' A booking holds back a seat; a reservation (doubt) holds back agreement; a Native American reservation was land 'reserved' (held back) by the US government, originally a 19th-century euphemism for forced relocation.