I just returned from Paris. We were there during the attacks but were away from where they happened. It just seemed like a normal Friday night, then all of a sudden people's phones started buzzing like mad. As we approached our apartment (in the left bank) there were 5 - 6 heavily armed gendarmes on the corner. We heard sirens all night.
The next day most of the shops and all of the museums/monuments were closed. Most restaurants were open though along with some smaller galleries.
Yesterday's air travel experience flying through CDG going through 2E (US terminal): mobile check in will likely be impossible. We had no problems doing it on the way over. Now they want to see/check your passport multiple times. Lines move fairly fast once you have checked in. We got there and only had a few people in front of us; when we turned around a large queue had formed. Signs everywhere warn of delays. Our flight is on time but the gate changed at least 3X. To be on the safe side I would give at least 2.5 hours.
On our flight they specifically made an announcement stating that passengers were not allowed to congregate in groups. Armed security guards were on the air bridge outside our doors. There were additional armed customs officers who pulled aside certain people to check their passports before we even got to the customs area (it was pretty blatant that it was younger, brown males.)
