Hi!!! I am fairly new here and am having trouble sorting out some small details.  Since a vegas wedding isn't typical as far as planning goes, when I ask other people for advice not many people know how to help, so I thought I'd turn to you guys 

  I have so many random questions, I didn't know if it would be obnoxious to make a separate post for each one, so I just listed them here.  Help me out if you can!!
Do I need to make room blocks for my guests?  My fiance says to just let people stay wherever they want.
Do I need to coordinate transportation to and from my wedding? My wedding will be at the stratosphere, so off strip.  Could this be a problem?
Is it tacky if my invitations are "petite"? I didn't even realize this was a thing until the sample I ordered arrived.  It's so pretty, a little less expensive, but a smaller card.  Big deal, or not?
Is it presumptuous to have a card box at my wedding?  I know that's normal for regular weddings, but we aren't doing a registry and are telling people their presence is a gift 

 so should I nix the card box? I do think some people will bring cards, just from knowing my family. 
Thanks in advance!!