update on picture question
update
this is where I am at the moment
large screen at the front of booth on overhead gantry showing pictures from a dedicated folder on connected laptop by HDMI
every now and then one of the pictures advertises the fact that guests can Bluetooth their pictures to a certain name such as wedding couple, birthday girl/boy etc
laptop is renamed to party person or couple and then guests choose picture or take picture on phone and then choose share and send via Bluetooth to laptop.
laptop folder which holds the pictures is linked to fast stone image viewer (freeware) which performs the slideshow on big screen.
laptop displays folder and all images coming in as thumbnails and allows you to censor anything undesirable before it hits the big screen.
all ok so far as I can see but only stumbling block is you have to watch laptop folder for incoming signals from phones etc that have to pair first with laptop before they can send pics.
once initial pairing is done then no problem but I don't think you can do it with out pairing first.
if anyone knows any different then let me know
also been trying similar software from martin which is through Bluetooth and seems quite good as well.