Don't sweat the "small stuff", more often than not it will take care of itself and if not it was just some "small stuff". Nothing earth shattering. Save the sweat for the big stuff and those HOT, HUMID days when the AC won't work.(But that AC thing is a subject for another thread)
Planning ahead is fine but don't put them in stone. Be flexible. With few exceptions, we rarely travel with reservations. There are too many attractions or events down the road that you were unaware of and may have to pass up because you are committed to some reservation. The few exceptions are holiday weekends or special events such as an MOC rally.