With all furniture stores if they have the item in stock then it is normally delivered the next day after 4pm. Sometimes you can be lucky and if there is a space on van then they will deliver the same day.
Do you know yet the timetable for what you are doing in the two days you are over. When do you go to Notary? Do you need the beds so that you can sleep at your new property?
I bought a resale on the last day of a trip out with friends, came back 10 days later on a Tuesday, Wednesday morning opened up Bank account, afternoon spent in Solicitor's office waiting with a room full of other people signing paper after paper until we finally got called to Notary.
Felt totally drained after hours spent waiting, when finally got to house, walked around feeling lost and glad that I had a friends house to stay in for a few more days.
My new next door neighbour took me to a furniture shop the next afternoon (Thursday) and I chose beds, furniture, fridge/freezer and washing machine. They were delivered the next day even though it had been raining all day.
All very quick but in hindsight perhaps I rushed into it too quickly, the mattresses I find uncomfortable, ok for a short holiday but I will be changing them when we are over for longer periods. When I do I will go for ottoman beds for somewhere to store the bedding.
Maybe if you can it would be better to use the two days to choose your furiture and arrange for it to be delivered on the first day of your next trip out.