I see a few "NOs" ....but,
I did the Frances, Ingles and Portuguese with my light weight tent. Purchased from REI.
When I did not want to stay inside, and that was often, I sat it up outside. Most of the time out back of the A'berg. Was nice having my "own place" and not hearing snoring, talking, rattling of bags at 4 am, etc.
A few times the A'berg was full but when told I had a tent I was welcomed to stay out back.
Few times on the grass. Few times under a covered area. Few times on the porch. and other places.
I paid the A'berg fee. Used shower. Washed clothes, etc.
It gave me the piece of mind that I had somewhere to sleep if needed. And could, if needed, even sleep in between two places/towns. Gave me flexibility most other walkers did not have. Avoided the "got to get there" feeling.
For all those who have come backs to me....just so you know when stealth camping: NO do not cook. NO fires. NO smoking. NO music. NO lights. Leave as found. NO tenting on private land. etc.
If it got to be too much of a hassle carrying it...I was going to donate it to some one.
Yes, was little extra weight. But I saw people carrying books, electronic devices, maps, you name it. In comparison my tent did not weight that much.
I DID NOT take any cooking devices.
Sleeping bag (light weight down -- compresses very small) and a pad.
Against all of the nay sayers... I say take your tent and enjoy.
Speaking of enjoying...I did spend a few nights at a nice place. To relax.
When I got to Santiago I stayed, as before, at the Hotel/Hostal Alfonso. Great place. Well worth it. You can find it on the net. Fills up fast. So make reservation as soon as you know when will be in Santiago.
If it doesn't work then ship it..donate it... or toss it.