At the moment our original booking has changed, as AA have automatically rebooked us to another schedule and cancelled previous flights. Obviously we've not agreed on anything yet.
As there's no harm in waiting a couple of weeks or more to decide, we'll do this and see how the situation develops before deciding on requesting a refund.
Its most likely we will have to refund as there are probably slim chances of any changes by July in US immigrations for foriegn international entry (despite spouse being US but I'm a UK citizen), and depending on how things develop regarding virus and opening of public services etc.
Thanks for all the helpful advice!