So! I’m going in for an MRI in a fortnight, and going to need my piercings out minimum 8am - 6pm that day. I’ve ordered a bunch of acrylic / bioplast retainers in various sizes for most piercings, but not sure what to do about my daith or my 14g faux-industrial vert helixes (not pictured).

Daith is 9 months old, no issues for the last 6 months, stainless steel 14g CBR.   
Vert helixes are 7 months old with 8mm (downsized) 14G barbells, internally threaded & implant grade titanium, also no issues for at least 3 months. 

Very occasional Neilmed spray if they get angry / I slept on them. 

I will need a piercer to help change all 3 piercings over to retainers, and definitely to change the daith back. There’s not a huge spread of piercing shops where I live or near the scan centre, and my options are:  
\- Get those three changed Friday evening (convenient place and time) for the Monday scan. Change back Tuesday lunchtime or evening.  
\- Go out of my way to get those three changed Sunday afternoon. Change back Tuesday lunchtime or evening.

Would getting them changed on Friday be a really bad idea? Conversely, how long could I get away with leaving the retainers in? I might have an easier time on Thursday or Friday as places tend to be open later.

I’ll opt for whatever retainer the piercing shop have, but I’ve ordered 2 x different acrylic horseshoes for the daith and 14G labrets for the vert helixes just in case they don’t have suitable stock.

Everything else in my set up is over a year old so I’m not too stressed and will change out myself, just worried about the three freshies (which happen to be the hardest to change!! Don’t want to attempt a CBR solo in a million years).

MRI in a few weeks - retainer advice?