Navigating the Halachic landscape of vacation

What can you buy in a store without a Hechsher?
Halachos of Cholov Stam 
Going mixed swimming with family
Taking a walk on the boardwalk
Sitting next to women on planes
Should you visit a Beis Hakvaros?
Are you allowed to Daven to the dead or just in the Zechus of the dead?
Can expectenat ladies go to a Beis Hakvaros?
Can a Kohein go to Kivrei Tzadikim?
Putting on a Tallis and Tefillin by Kivrei Tzadikim
And much more……