I have asked the German club about Summer Camps / moving the rally.
This is their answer.
Remember that each countries BSA club is an independent club.
Note: Refunds of your rally money is very good, but you also would need to think about your ferry refund, and maybe pay extra to allow yourselves a refundable crossing.
Andy
The "big question" occurred in this group. I had a look into my crystal ball and saw "Not in the office, due to lockdown".
It is no option, to postpone to next year, as the Belgian Club will have their Rally in 2022.
Also, later this year would mean to make a lot of new contracts and who knows if the THING is over in September ?
We decided to carry on until two weeks before the Rally-date. If government-rules then say "no" we will cancel, otherwise it will be a Rally for only a small group, when I look at the booking-nos.
The decision is up to you.
Germans are allowed to fly to Mallorca over the Easter days.
If in summer there will be restrictions to have holidays inside this country, there will be rebellion.