Info on submitting coins at the Show

I've never submitted at a show, other than same day service. I have a whole oodle of coins to submit. Figured I'd fill out the electronic form online and bring them with me tonight on the flight to Vegas, dropping them off Friday.
What's your opinion, as to the Security of the Coins once I drop them at the PCGS table. Any chance of them getting lost ?
Will they sign my copy of the submission as a Guarantee that they have accepted them as listed on the Sheet ?
Any other opinons would be welcomed.
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Comments
Its as simple as that!
The name is LEE!
<< <i>My opinion is to simply take them in and then ask the CS Rep you deal with at the show.
Its as simple as that! >>
"Inspiration exists, but it has to find you working" Pablo Picasso
Over the years dealers have handed over billions of dollars worth of coins. They wouldn't do that if there was a lack of confidence in the security of the grading companies.
Authorized dealer for PCGS, PCGS Currency, NGC, NCS, PMG, CAC. Member of the PNG, ANA. Member dealer of CoinPlex and CCE/FACTS as "CH5"
<< <i>What's your opinion, as to the Security of the Coins once I drop them at the PCGS table. Any chance of them getting lost? >>
I think there is a much greater chance that you will lose your coins on the way to the show than PCGS will lose them once submitted.