Been there not long ago (from Spain). You need 24h PPR, fax back the forms (which they'll email to you - but the return needs to be by fax). Mandatory handling @ approx 75 - 100 GBP (that's a SEP). Didn't need top uplift fuel, so cannot comment. Read the 'caveats' (which you'll sign for) re wind shear. And treat this seriously - for once, this is NOT some H&S BS !