Monday I had off from work so I took a run to A.C. played at the borgata for 9 hours, people were coming and going as they pleased mid shoe or not. I noticed I was playing at a automatic card shuffling table. Went today ( teusday ) spent 5 hours, went to sit at a table and lady says " no mid shoe entry " and I noticed no card shuffling machine. Is the hand shuffling to machine shuffling the reason for the allowance and disallowance of entering a game in progress ?

I assume its better to play at a dealer shuffled deck so you can try and track where the high cards are ?