Need some AI advice

I need some advice this is my first cycle trying my periods were very irregular and this April they have been regular and this month I ovulated for the first time we have a donor and have to meet him mid July I’m having issues with transportation and may only be able to get to him once this cycle and if I have to Uber there and home it’s about 30 minutes away will the sperm be okay in a container with a leak proof lid how long do you think I have if I keep it in between my breast until we get home should I put some preseed in it before he does it I’m very new to this and need some friendly help I look forward to your advice soon