Hey there
I don't know anything about either of these clinics but I have had treatment in Barcelona. It's possible that the clinic in Alicante works in a simialr way so I'll give you a quick rough guide. I had treatment using donor eggs so can only comment on this particular protocol, if you are not using a donor then it will be very different:
I had an initial appointment in Spain where my DH left a sperm sample, which was frozen, and I had a scan. We filled out general paperwork and left with a bag full of drugs. I was free to start treatment when I wanted (I am not sure if all the clinics in Spain are the same in this respect) and basically started the contraceptive pill on day one of my cycle. I stayed on this until the clinic advised me to stop and had to let them know when my period started. At this point I started on oestrogen patches and had a scan to check my lining here in the UK. It was then just a waiting game until my donor was ready for egg collection and we only had 48 hours' notice to then travel back to Spain for the transfer. I started on progesterone the day before the transfer and carried this on until I was 14 weeks pregnant.
So, all in all we were only in Spain for a total of about three days so it is not much time out abroad overall.
Hope this helps a bit!
Love Gracie
xxx