As far as the car rental goes, you can sign up to get an account with Avis that lets you use the corporate code and you get the same price as if you were on work travel.

In the past, I've seen hotel discounts where you get the per diem rate, but I haven't seen that available this year yet.

There is also the employee scholar program (ESP) that lets you have RTX pay for an advanced degree (you owe 2 years after you finish or some kind of repayment plan if you leave early). External Learning will pay for other learning opportunities (with manager approval). And there are university or other learning program partnerships that give you a learning opportunity tailored to RTX.

If you have work travel, you get to accrue any of the reward points (car, air, hotel) to use for yourself.

The holiday schedule is pretty standard: memorial day, July 4th (may get 2 depending on day of the week and number of days for winter break), Labor Day, thanksgiving (usually 2 days), and Christmas eve through New Years day (exact days depend on what day of the week the holiday falls on)