If you can, remember those who don't have these things. Donate or help out at a homeless shelter. Remember our soldiers overseas who cannot be home with loved ones because they are allowing us to have this day. Be nice to those who don't get today off and have to work to serve you, believe me it is not THEIR choice.
So enjoy yourselves, eat a lot (you can diet later) and enjoy your loved ones while they are with you.
Finally please DON'T do this to your animals!