No, our activities schedules are shared with everyone, but your attendance is not absolutely required.
We recommend using CityMapper and Google Map as the best go-to apps for navigating the city. For transportation, we do recommend using Lyft or Uber, since sometimes you may have a hard time finding cabs.
We recommend using Groupon, GiltCity, Living Social apps for looking for good deals in the city. For shows and deals, Goldstar app gives a lot of discounted tickets for many shows in the city, and for finding events, check out Pulsd, and Fever apps for interesting events in the city.
Bring these just in case: Sunglasses lots of layers - scarfs, cardigans, neck warmer, etc. beanie/wool hat