Fill me with air or water I'm fun with both, but the fun pops when I break.

My Name Explains My Over- Needed Initial Capitalization

I'm not the main attraction, I'm not the main reason you're here, But still I'll entertain you, and hopefully I'll still make you cheer, Add a shortened version of Robert to me, and in many yellow hearts, I strike fear, But more fear in one, not the main yellow man, but his spanish-speaking son, but he already knows to steer clear

Woooah! We're halfway there! Woah-OAH! Halfway through a prayer! Take a pause! We'll still make it I swear! Woah-OAH! Half a sec to spare!?

Tulips, windmills and heaps of cheese are the first things a visitor's mind's eye sees. Oh, and wooden shoes of course, the common trope. -Almost- nobody actually even owns these things, nope! Also, don't be disappointed that not every city has dikes. The one image that does fit, however, is that of millions of bikes.