winewhine re "We've been told it has to be 4 months, at FC house. That distance is there and back. But it's certainly no day trip!" I think four months sounds fine. Not too soon and not too distant.
Agree with tldr, just agree and review when dc is home.
Not sure why it needs to be foster carers home. That sounds daft, I would prefer a neutral spot. Can you research cafe's, child friendly pubs or soft play places in the area and suggest to foster carer a different location nearer the time?
Our ds's foster carer did come to our house, after quite a while (10 months), I was nervous but ds actually wanted her to come, and it was fine. Being at our house I could control what we did etc (eat and open Christmas presents) but she could control how long she stayed.
We have never been back to foster carer's house, but I would be open to it one day, because ds does feel very settled and I am not sure it would be an issue, but who knows!
Can you afford a night in a hotel when you go, to break up journey?
Can you afford a night in a hotel after three months, not too far away?
If your child is very young I would not worry too much, if they were two or three or more I'd try and set a president that a trip far away won't always result in seeing foster family.
In your shoes, if I could afford it I would take a night in a hotel not too far away about a month before the visit and do something fun like a zoo trip or a beach trip. Then make the visit to foster carer fun by going somewhere nice before or afterwards. Luckily, kids are easily pleased, mine like a ride on the machines outside the supermarket! (The Noddy car etc!) Or they did when younger.
I'd also try and make the hotel overnight of the visit before you see foster carer so that you travel straight back to home afterwards.
Try and have some familiar things with you. Same bedding, not washed before visit. Some nice lullabies you can play at home and then in the car. I'd do this so that these nice things are 'normal' and then part of the trip, rather than having special music CDs or whatever for the first time journey, or little one might associate the visiting foster carer with that music.
I know it sounds a bit OTT but I really associate things together. EG when I was going through a rough patch at work I carried my work items in a green bag, the sight of a green bag made me think of work and feel a bit miserable! Now work is good, I use a brown bag and when I see another brown bag I don't think of work or anything special at all. Does that make sense?
All the best.