paris visite pass

My husband and I will be staying at the Best Western Nouvel Orleans in Paris for 3 days. We plan to hit up the usual tourist attractions while we%26#39;re there. I was wondering if someone can tell me how many zones should my Paris Visite cover. I was thinking 1-3 zones. Also, if we are taking the RER from the airport to the hotel, will we have to purchase a separate train ticket? Thanks.

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All the Paris %26#39;sights%26#39; are within 2 zones. CDG is in zone 5.

RER ticket 8.10 each way

PARIS VISITE - 3-DAY

1-3 18.25

1-5 37.35 %26gt;%26gt;%26gt; covers the RER trip

MOBILIS - 1-DAY PASS

1-2 5.50 %26gt;%26gt;%26gt;%26gt; 3 days%26#39; is cheaper than the PV

CARTE ORANGE (use anytime Mon-Sun, but must buy it by Wed)

1-2 16.00 %26gt;%26gt;%26gt;%26gt; cheaper than PV

1-5 31.50 %26gt;%26gt;%26gt; covers the RER trip