Hope this helps, Ive a few different answer tho cus we've been through so many donors, just find out whats best for you!! (this is gona be quite long Ive just realised lol)
Where do you meet?
- with our first ever insemination, our donor lived about 70 miles away, so we booked into a hotel near his house..he 'did the deed' in the room while me and OH waitied in reception...then he test us when he was done..we went back up..he went and waited in reception until Id inseminated, then text him to come back up. This was a bad idea because 1 - we were all SUPER nervous, it was his first time donating too. 2 - I could hear the people in the room next door talking really loudly, and it really put me off, so I found it really hard to relax and have the 'Big O'... 3 - It was a bad idea for us to let him back into the room, because although I was under the blankets, I was still naked from the waist down..I was uncomfortable, he was uncomfortable and tried making small talk, but it seemed like a good idea at the time, so he wasn't 'doing the deed' then we wanted rid of him.
The next few times, he got the train to our ouse, we had lunch, he went into the bathroom and 'did the deed', then I went into the bedroom and did the insemination, while he and OH chatted, then he got back on the train and went home. This worked better for us, as I was alot less stressed because I was in my own house, but I still felt weird with him being in the house whle I was inseminating.
With another guy, he lived 10 mins drive from us, so he 'did the deed' at his own house, and met me at the top of the street with it in a pot, then I ran home with it inside a sock in my pocket to keep it warm lol) and inseminated at home.
And with our current donor (who I love so much!), he usually works near our house, so he 'does the deed' at work, brings it to the house, pulls up outside, I go out and get it from the car, and then do the insemination while he goes back to work. On one occasion me and OH drove to his house and I did it there in his spare room, while he showed OH how to brew herbal tea in the kitchen, lol. It was all very relaxing, and we stayed for over 2 hours chatting to him after!
This month tho, my usual donor wasnt available, so I went to my sisters house, and had our backup donor bring his spermies to her house, then off he went again.
Personally, I think its alot better if they leave you the sample then go, as you're alot less stressed, you can do the inseminating in your own time, and you're not worrying about rushing so you can come back out and make small talk.
A few times Ive been at home alone while OH was at work, and sometimes she's here, that all depends on whether or not you're comfortable being with the donor on your own! I also think you and the donor should talk about whether or not he's willing to just leave it and go, as some want to stick around for awhile after!
Where does he "do the deed"?
If it's in a hotel, he usually uses the room first..then he texts you to go back up. I think it's best that he leaves to go home after that, so you and your OH can relax in the room, DONT invite him back in after its done, its awkward for everyone

lol
When its in our house, he does it in the bathrrom while we make tea, then he chats to OH and I go into the bedroom to inseminate, or sometimes he does it in the bedroom, and leaves it by the bed for when I go in!
What does he put the sperm in?
I get sterile pots from Ebay, think its £8 for 50

Make sure he puts the lid back on tightly and keeps it warm, and don't use it for the first 5 minutes or so, its easier to get into the syringe then!
How long before you inseminate it?
About 5 minutes from its out, but no more than 20! (Tho I have got pregnant with some that was out for 30 mins!)
Do you offer him gas money for travelling?
We do offer, but all except one declined! (we ended up paying a driving fine for one tho, silly man!)
If you have anymore questions, feel free to ask!!! And good luck!!!
Oh, and I usually contact the donor when my OPKs start getting darker, and try to do it the day before or the day of the positive OPK!